Danh sách câu hỏi ( Có 2,196,205 câu hỏi trên 43,925 trang )

Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Cho các phát biểu sau:(1) Ở người, nồng độ glucozơ trong máu được giữ ổn định ở mức 0,1%.(2) Oxi hóa hoàn toàn glucozơ bằng hiđro (xúc tác Ni, to) thu được sobitol.(3) Tơ xenlulozơ axetat thuộc loại tơ hóa học.(4) Thủy phân este đơn chức trong môi trường bazơ luôn cho sản phẩm là muối và ancol.(5) Số nguyên tử N có trong phân tử đipeptit Glu–Lys là 2.(6)Tất cả các peptit đều có phản ứng màu biure. Số phát biểu đúng là

Hóa học Tốt nghiệp THPT
Xem chi tiết 446 lượt xem 5 năm trước
Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P3)

Một viên bi được ném theo phương ngang với vận tốc 2 m/s từ độ cao 5 m so với mặt đất. Lấy g=10m/s2. Tầm ném xa của viên bi là

Vật lý Lớp 10
Xem chi tiết 380 lượt xem 5 năm trước
DẠNG 3 BÀI TẬP AMIN PHẢN ỨNG VỚI MUỐI

Hỗn hợp X gồm 2 muối AlCl3 và CuCl2. Hòa tan hỗn hợp X vào nước thu được 200ml dung dịch A. Sục khí metyl amin tới dư vào dung dịch A thu được 11,7 g kết tủa. Mặt khác cho từ từ dung dịch NaOH tới dư vào dung dịch A thu được 9,8 gam kết tủa. Nồng độ mol/l của AlCl3  và CuCl2trong dung dịch A lần lượt là:

Hóa học Lớp 12
Xem chi tiết 2.3 K lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the three in the position of primary stress in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 755 lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.When we moved to our new house near the sea, I was eight years old. Even before that I had spent every summer messing about on boats. My dad had taught me to sail before I learnt to ride a bike so I knew how I wanted to spend my time at the new house- I was going to get my own boat and sail it everyday. The house was only a few metres from the water's edge, and in rough weather the waves would come crashing into the front garden. I used to sit with my nose pressed to the glass, fascinated by the power of the ocean. I grew up watching the skies to see if it was going to rain; would I be going sailing that afternoon or not? Of course I sometimes wished I could live in the town like my friends. I used to get irritated with my parents, who had taken early retirement because they seemed incapable of getting anywhere on time. Dad drove me the eight miles to school everyday, but I was often late because he had been walking on the cliffs earlier in the morning and had lost track of time. When I was taking my university entrance exams, I used to stay over at a friend’s in town, just in case. All in all, I was lucky to grow up by the sea and I still love to sail.Growing up by the sea, the writer felt ______________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 394 lượt xem 5 năm trước
Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P3)

Một vật được ném ngang ở độ cao 45 m so với mặt đất. Bỏ qua sức cản của không khí và lấy g=10m/s2. Thời gian vật rơi tới khi chạm đất là

Vật lý Lớp 10
Xem chi tiết 411 lượt xem 5 năm trước
Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Cho m gam hỗn hợp E gồm peptit X và 1 amino axit Y (trong đó khối lượng của X lớn hơn 20) được trộn theo tỉ lệ mol 1 : 1, tác dụng với một lượng dung dịch NaOH vừa đủ thu được dung dịch G chứa (m + 12,24) gam hỗn hợp muối natri của glyxin và alanin. Dung dịch G phản ứng tối đa với 360 ml dung dịch HCl 2M thu được dung dịch H chứa 63,72 gam hỗn hợp muối. Biết các phản ứng xảy ra hoàn toàn. Phần trăm khối lượng của X trong hỗn hợp E gần nhất với

Hóa học Tốt nghiệp THPT
Xem chi tiết 218 lượt xem 5 năm trước
ĐỀ 5

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.ARE HUMAN BEINGS GETTING SMARTER?Do you think you're smarter than your parents and grandparents? According to James Flynn, a professor at a New Zealand university, you are! Over the course of the last century, people who have taken IQ tests have gotten increasingly better scores-on average, three points better for every decade that has passed. This improvement is known as "the Flynn effect," and scientists want to know what is behind it. IQ tests and other similar tests are designed to measure general intelligence rather than knowledge. Flynn knew that intelligence is partly inherited from our parents and partly the result of our environment and experiences, but the improvement in test scores was happening too quickly to be explained by heredity. So what was happening in the 20th century that was helping people achieve higher scores on intelligence tests? Scientists have proposed several explanations for the Flynn effect. Some suggest that the improved test scores simply reflect an increased exposure to tests in general. Because we take so many tests, we learn test-taking techniques that help us perform better on any test. Others have pointed to better nutrition since it results in babies being born larger, healthier, and with more brain development than in the past. Another possible explanation is a change in educational styles, with teachers encouraging children to learn by discovering things for themselves rather than just memorizing information. This could prepare people to do the kind of problem solving that intelligence tests require. Flynn limited the possible explanations when he looked carefully at the test data and discovered that the improvement in scores was only on certain parts of the IQ test. Test takers didn't do better on the arithmetic or vocabulary sections of the test; they did better on sections that required a special kind of reasoning and problem solving. For example, one part of the test shows a set of abstract shapes, and test-takers must look for patterns and connections between them and decide which shape should be added to the set. According to Flynn, this visual intelligence improves as the amount of technology in our lives increases. Every time you play a computer game or figure out how to program a new cell phone, you are exercising exactly the kind of thinking and problem solving that helps you do well on one kind of intelligence test. So are you really smarter than your parents? In one very specific way, you may be.Which sentence from the article gives a main idea?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 2 K lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.When we moved to our new house near the sea, I was eight years old. Even before that I had spent every summer messing about on boats. My dad had taught me to sail before I learnt to ride a bike so I knew how I wanted to spend my time at the new house- I was going to get my own boat and sail it everyday. The house was only a few metres from the water's edge, and in rough weather the waves would come crashing into the front garden. I used to sit with my nose pressed to the glass, fascinated by the power of the ocean. I grew up watching the skies to see if it was going to rain; would I be going sailing that afternoon or not? Of course I sometimes wished I could live in the town like my friends. I used to get irritated with my parents, who had taken early retirement because they seemed incapable of getting anywhere on time. Dad drove me the eight miles to school everyday, but I was often late because he had been walking on the cliffs earlier in the morning and had lost track of time. When I was taking my university entrance exams, I used to stay over at a friend’s in town, just in case. All in all, I was lucky to grow up by the sea and I still love to sail.The following are true EXCEPT ______________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 367 lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. THE PEOPLE BEHIND THE MUSICThink for a moment about the last music album you bought. Most likely, you’ll think of the singer or band that made you want to buy the album. You might even know the name of the guitar player or the drummer. Those talented performers, however, are only some of the people in the music industry work behind the scenes, but the roles they play in the musical progress are very important. Songwriters: Songs begin with the songwriter. Some songwriters work alone, but many work in teams that combine the talents of a lyricist, who writes the words to songs, and an instrumentalist, often a piano player or guitarist, who writes the music. Many of today’s pop stars work with songwriters. For example, some of Lady Gaga’s biggest hits were written by Nadir Khayat, also known “RedOne”. Some songwriting teams have become very famous, such as Mike Stock, Matt Aitken, and Pete Waterman, who were responsible for many big 1980s pop hits. Arrangers: After a song has been written, music arrangers make it more appealing by deciding which instruments will be used, what tempo, or speed, the song will have, and whether the song should have a lower or higher pitch. A good arrangement can bring a song to life and make it a classic. Studio Musicians: Not every singer or instrumentalist can be a star, and many work in the background as studio musicians. These artists are not a part of any one musical group. Instead, they are hired for recording sessions that eventually become the albums you buy, as well as soundtracks for television shows, movies, and radio ads. Recording Engineers: Recording engineers also play a major role in creating the final sound that you hear. First, these engineers set up the recording studio, the room where the performers play, placing musicians and microphones in exactly the right places to get the best sound. Next, they use electronic equipment, such multi-track recorders, to capture the music. Finally, long after the musicians have gone home, recording engineers use a mixing board to balance the melodies and rhythms of each musician, and sometimes to incorporate special sound effects or additional tracks. Many people make a living with music. You may not recognize all of their names, but all of them work together to create the songs you love to listen toThe article is mainly about ________. 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1.5 K lượt xem 5 năm trước
20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 13)

Thỏ bị bạch tạng không tổng hợp được sắc tố mêlamin nên lông màu trắng, con ngươi của mắt có màu đỏ do nhìn thấu mạch máu trong đáy mắt. Đây là hiện tượng di truyền theo quy luật:

Sinh học Tốt nghiệp THPT
Xem chi tiết 320 lượt xem 5 năm trước
Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Hòa tan hoàn toàn 3,60 gam Mg trong 500 ml dung dịch HNO3 0,80M, phản ứng kết thúc thu được 448 ml một khí X (ở đktc) và dung dịch Y có khối lượng lớn hơn khối lượng dung dịch HNO3 ban đầu là 3,04 gam. Để phản ứng hết với các chất trong Y cần vừa đủ V ml dung dịch NaOH 2,00M. Giá trị của V là:

Hóa học Tốt nghiệp THPT
Xem chi tiết 246 lượt xem 5 năm trước
DẠNG 3 BÀI TẬP AMIN PHẢN ỨNG VỚI MUỐI

Để kết tủa hết 400 ml dung dịch hỗn hợp HCl 0,5M và FeCl3 0,8M cần bao nhiêu gam hỗn hợp gồm metylamin và etylamin có tỷ khối so với H2 là 17,25?

Hóa học Lớp 12
Xem chi tiết 221 lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.When we moved to our new house near the sea, I was eight years old. Even before that I had spent every summer messing about on boats. My dad had taught me to sail before I learnt to ride a bike so I knew how I wanted to spend my time at the new house- I was going to get my own boat and sail it everyday. The house was only a few metres from the water's edge, and in rough weather the waves would come crashing into the front garden. I used to sit with my nose pressed to the glass, fascinated by the power of the ocean. I grew up watching the skies to see if it was going to rain; would I be going sailing that afternoon or not? Of course I sometimes wished I could live in the town like my friends. I used to get irritated with my parents, who had taken early retirement because they seemed incapable of getting anywhere on time. Dad drove me the eight miles to school everyday, but I was often late because he had been walking on the cliffs earlier in the morning and had lost track of time. When I was taking my university entrance exams, I used to stay over at a friend’s in town, just in case. All in all, I was lucky to grow up by the sea and I still love to sail.The writer's father retired early because ______________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 573 lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. THE PEOPLE BEHIND THE MUSICThink for a moment about the last music album you bought. Most likely, you’ll think of the singer or band that made you want to buy the album. You might even know the name of the guitar player or the drummer. Those talented performers, however, are only some of the people in the music industry work behind the scenes, but the roles they play in the musical progress are very important. Songwriters: Songs begin with the songwriter. Some songwriters work alone, but many work in teams that combine the talents of a lyricist, who writes the words to songs, and an instrumentalist, often a piano player or guitarist, who writes the music. Many of today’s pop stars work with songwriters. For example, some of Lady Gaga’s biggest hits were written by Nadir Khayat, also known “RedOne”. Some songwriting teams have become very famous, such as Mike Stock, Matt Aitken, and Pete Waterman, who were responsible for many big 1980s pop hits. Arrangers: After a song has been written, music arrangers make it more appealing by deciding which instruments will be used, what tempo, or speed, the song will have, and whether the song should have a lower or higher pitch. A good arrangement can bring a song to life and make it a classic. Studio Musicians: Not every singer or instrumentalist can be a star, and many work in the background as studio musicians. These artists are not a part of any one musical group. Instead, they are hired for recording sessions that eventually become the albums you buy, as well as soundtracks for television shows, movies, and radio ads. Recording Engineers: Recording engineers also play a major role in creating the final sound that you hear. First, these engineers set up the recording studio, the room where the performers play, placing musicians and microphones in exactly the right places to get the best sound. Next, they use electronic equipment, such multi-track recorders, to capture the music. Finally, long after the musicians have gone home, recording engineers use a mixing board to balance the melodies and rhythms of each musician, and sometimes to incorporate special sound effects or additional tracks. Many people make a living with music. You may not recognize all of their names, but all of them work together to create the songs you love to listen toWhy does the author mention Lady Gaga? 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 625 lượt xem 5 năm trước
20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 13)

Trong các phát biểu về kích thước của quần thể sau đây, có bao nhiêu phát biểu sai?(1) Khi kích thước quần thể giảm dưới mức tối thiểu thì quần thể dễ rơi vào trạng thái suy giảm dẫn tới diệt vong.(2) Kích thước tối thiểu của một quần thể là số lượng cá thể ít nhất mà quần thể cần có để  duy trì và phát triển.(3) Khi kích thước quần thể giảm dưới mức tối thiểu thì không có sự cạnh trạnh giữa các cá thể trong quần thể.(4) Kích thước quần thể giảm xuống dưới mức tối thiểu thì khả năng sinh sản của quần thể cũng bị suy giảm(5) Kích thước quần thể là khoảng không gian cần thiết để quần thể tồn tại và phát triển

Sinh học Tốt nghiệp THPT
Xem chi tiết 554 lượt xem 5 năm trước
ĐỀ 5

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.ARE HUMAN BEINGS GETTING SMARTER?Do you think you're smarter than your parents and grandparents? According to James Flynn, a professor at a New Zealand university, you are! Over the course of the last century, people who have taken IQ tests have gotten increasingly better scores-on average, three points better for every decade that has passed. This improvement is known as "the Flynn effect," and scientists want to know what is behind it. IQ tests and other similar tests are designed to measure general intelligence rather than knowledge. Flynn knew that intelligence is partly inherited from our parents and partly the result of our environment and experiences, but the improvement in test scores was happening too quickly to be explained by heredity. So what was happening in the 20th century that was helping people achieve higher scores on intelligence tests? Scientists have proposed several explanations for the Flynn effect. Some suggest that the improved test scores simply reflect an increased exposure to tests in general. Because we take so many tests, we learn test-taking techniques that help us perform better on any test. Others have pointed to better nutrition since it results in babies being born larger, healthier, and with more brain development than in the past. Another possible explanation is a change in educational styles, with teachers encouraging children to learn by discovering things for themselves rather than just memorizing information. This could prepare people to do the kind of problem solving that intelligence tests require. Flynn limited the possible explanations when he looked carefully at the test data and discovered that the improvement in scores was only on certain parts of the IQ test. Test takers didn't do better on the arithmetic or vocabulary sections of the test; they did better on sections that required a special kind of reasoning and problem solving. For example, one part of the test shows a set of abstract shapes, and test-takers must look for patterns and connections between them and decide which shape should be added to the set. According to Flynn, this visual intelligence improves as the amount of technology in our lives increases. Every time you play a computer game or figure out how to program a new cell phone, you are exercising exactly the kind of thinking and problem solving that helps you do well on one kind of intelligence test. So are you really smarter than your parents? In one very specific way, you may be.IQ tests evaluate____________

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 758 lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. THE PEOPLE BEHIND THE MUSICThink for a moment about the last music album you bought. Most likely, you’ll think of the singer or band that made you want to buy the album. You might even know the name of the guitar player or the drummer. Those talented performers, however, are only some of the people in the music industry work behind the scenes, but the roles they play in the musical progress are very important. Songwriters: Songs begin with the songwriter. Some songwriters work alone, but many work in teams that combine the talents of a lyricist, who writes the words to songs, and an instrumentalist, often a piano player or guitarist, who writes the music. Many of today’s pop stars work with songwriters. For example, some of Lady Gaga’s biggest hits were written by Nadir Khayat, also known “RedOne”. Some songwriting teams have become very famous, such as Mike Stock, Matt Aitken, and Pete Waterman, who were responsible for many big 1980s pop hits. Arrangers: After a song has been written, music arrangers make it more appealing by deciding which instruments will be used, what tempo, or speed, the song will have, and whether the song should have a lower or higher pitch. A good arrangement can bring a song to life and make it a classic. Studio Musicians: Not every singer or instrumentalist can be a star, and many work in the background as studio musicians. These artists are not a part of any one musical group. Instead, they are hired for recording sessions that eventually become the albums you buy, as well as soundtracks for television shows, movies, and radio ads. Recording Engineers: Recording engineers also play a major role in creating the final sound that you hear. First, these engineers set up the recording studio, the room where the performers play, placing musicians and microphones in exactly the right places to get the best sound. Next, they use electronic equipment, such multi-track recorders, to capture the music. Finally, long after the musicians have gone home, recording engineers use a mixing board to balance the melodies and rhythms of each musician, and sometimes to incorporate special sound effects or additional tracks. Many people make a living with music. You may not recognize all of their names, but all of them work together to create the songs you love to listen toWhich statement would the author probably agree with? 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1 K lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.When we moved to our new house near the sea, I was eight years old. Even before that I had spent every summer messing about on boats. My dad had taught me to sail before I learnt to ride a bike so I knew how I wanted to spend my time at the new house- I was going to get my own boat and sail it everyday. The house was only a few metres from the water's edge, and in rough weather the waves would come crashing into the front garden. I used to sit with my nose pressed to the glass, fascinated by the power of the ocean. I grew up watching the skies to see if it was going to rain; would I be going sailing that afternoon or not? Of course I sometimes wished I could live in the town like my friends. I used to get irritated with my parents, who had taken early retirement because they seemed incapable of getting anywhere on time. Dad drove me the eight miles to school everyday, but I was often late because he had been walking on the cliffs earlier in the morning and had lost track of time. When I was taking my university entrance exams, I used to stay over at a friend’s in town, just in case. All in all, I was lucky to grow up by the sea and I still love to sail.The word “rough” is closest in meaning to ______________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 360 lượt xem 5 năm trước
20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 13)

Nhà di truyền hoặc gắn gen người vào plasmit của vi khuẩn để làm gì?

Sinh học Tốt nghiệp THPT
Xem chi tiết 806 lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. THE PEOPLE BEHIND THE MUSICThink for a moment about the last music album you bought. Most likely, you’ll think of the singer or band that made you want to buy the album. You might even know the name of the guitar player or the drummer. Those talented performers, however, are only some of the people in the music industry work behind the scenes, but the roles they play in the musical progress are very important. Songwriters: Songs begin with the songwriter. Some songwriters work alone, but many work in teams that combine the talents of a lyricist, who writes the words to songs, and an instrumentalist, often a piano player or guitarist, who writes the music. Many of today’s pop stars work with songwriters. For example, some of Lady Gaga’s biggest hits were written by Nadir Khayat, also known “RedOne”. Some songwriting teams have become very famous, such as Mike Stock, Matt Aitken, and Pete Waterman, who were responsible for many big 1980s pop hits. Arrangers: After a song has been written, music arrangers make it more appealing by deciding which instruments will be used, what tempo, or speed, the song will have, and whether the song should have a lower or higher pitch. A good arrangement can bring a song to life and make it a classic. Studio Musicians: Not every singer or instrumentalist can be a star, and many work in the background as studio musicians. These artists are not a part of any one musical group. Instead, they are hired for recording sessions that eventually become the albums you buy, as well as soundtracks for television shows, movies, and radio ads. Recording Engineers: Recording engineers also play a major role in creating the final sound that you hear. First, these engineers set up the recording studio, the room where the performers play, placing musicians and microphones in exactly the right places to get the best sound. Next, they use electronic equipment, such multi-track recorders, to capture the music. Finally, long after the musicians have gone home, recording engineers use a mixing board to balance the melodies and rhythms of each musician, and sometimes to incorporate special sound effects or additional tracks. Many people make a living with music. You may not recognize all of their names, but all of them work together to create the songs you love to listen toThe word “classic” in paragraph 3 is closest in meaning to _________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 458 lượt xem 5 năm trước
DẠNG 3 BÀI TẬP AMIN PHẢN ỨNG VỚI MUỐI

Cho hỗn hợp X gồm 2 amin đơn chức là đồng đẳng kế tiếp nhau tác dụng với dung dịch HCl thu được 14,2 gam hỗn hợp muối. Cho hỗn hợp muối đó vào dung dịch AgNO3 dư thu được 28,7 gam kết tủa. Công thức phân tử của các chất trong hỗn hợp X là

Hóa học Lớp 12
Xem chi tiết 3.8 K lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. THE PEOPLE BEHIND THE MUSICThink for a moment about the last music album you bought. Most likely, you’ll think of the singer or band that made you want to buy the album. You might even know the name of the guitar player or the drummer. Those talented performers, however, are only some of the people in the music industry work behind the scenes, but the roles they play in the musical progress are very important. Songwriters: Songs begin with the songwriter. Some songwriters work alone, but many work in teams that combine the talents of a lyricist, who writes the words to songs, and an instrumentalist, often a piano player or guitarist, who writes the music. Many of today’s pop stars work with songwriters. For example, some of Lady Gaga’s biggest hits were written by Nadir Khayat, also known “RedOne”. Some songwriting teams have become very famous, such as Mike Stock, Matt Aitken, and Pete Waterman, who were responsible for many big 1980s pop hits. Arrangers: After a song has been written, music arrangers make it more appealing by deciding which instruments will be used, what tempo, or speed, the song will have, and whether the song should have a lower or higher pitch. A good arrangement can bring a song to life and make it a classic. Studio Musicians: Not every singer or instrumentalist can be a star, and many work in the background as studio musicians. These artists are not a part of any one musical group. Instead, they are hired for recording sessions that eventually become the albums you buy, as well as soundtracks for television shows, movies, and radio ads. Recording Engineers: Recording engineers also play a major role in creating the final sound that you hear. First, these engineers set up the recording studio, the room where the performers play, placing musicians and microphones in exactly the right places to get the best sound. Next, they use electronic equipment, such multi-track recorders, to capture the music. Finally, long after the musicians have gone home, recording engineers use a mixing board to balance the melodies and rhythms of each musician, and sometimes to incorporate special sound effects or additional tracks. Many people make a living with music. You may not recognize all of their names, but all of them work together to create the songs you love to listen toWhich of the following do music arrangers probably NOT do? 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 443 lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.When we moved to our new house near the sea, I was eight years old. Even before that I had spent every summer messing about on boats. My dad had taught me to sail before I learnt to ride a bike so I knew how I wanted to spend my time at the new house- I was going to get my own boat and sail it everyday. The house was only a few metres from the water's edge, and in rough weather the waves would come crashing into the front garden. I used to sit with my nose pressed to the glass, fascinated by the power of the ocean. I grew up watching the skies to see if it was going to rain; would I be going sailing that afternoon or not? Of course I sometimes wished I could live in the town like my friends. I used to get irritated with my parents, who had taken early retirement because they seemed incapable of getting anywhere on time. Dad drove me the eight miles to school everyday, but I was often late because he had been walking on the cliffs earlier in the morning and had lost track of time. When I was taking my university entrance exams, I used to stay over at a friend’s in town, just in case. All in all, I was lucky to grow up by the sea and I still love to sail.At the age of eight, the writer's house was ______________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 533 lượt xem 5 năm trước
ĐỀ 5

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.ARE HUMAN BEINGS GETTING SMARTER?Do you think you're smarter than your parents and grandparents? According to James Flynn, a professor at a New Zealand university, you are! Over the course of the last century, people who have taken IQ tests have gotten increasingly better scores-on average, three points better for every decade that has passed. This improvement is known as "the Flynn effect," and scientists want to know what is behind it. IQ tests and other similar tests are designed to measure general intelligence rather than knowledge. Flynn knew that intelligence is partly inherited from our parents and partly the result of our environment and experiences, but the improvement in test scores was happening too quickly to be explained by heredity. So what was happening in the 20th century that was helping people achieve higher scores on intelligence tests? Scientists have proposed several explanations for the Flynn effect. Some suggest that the improved test scores simply reflect an increased exposure to tests in general. Because we take so many tests, we learn test-taking techniques that help us perform better on any test. Others have pointed to better nutrition since it results in babies being born larger, healthier, and with more brain development than in the past. Another possible explanation is a change in educational styles, with teachers encouraging children to learn by discovering things for themselves rather than just memorizing information. This could prepare people to do the kind of problem solving that intelligence tests require. Flynn limited the possible explanations when he looked carefully at the test data and discovered that the improvement in scores was only on certain parts of the IQ test. Test takers didn't do better on the arithmetic or vocabulary sections of the test; they did better on sections that required a special kind of reasoning and problem solving. For example, one part of the test shows a set of abstract shapes, and test-takers must look for patterns and connections between them and decide which shape should be added to the set. According to Flynn, this visual intelligence improves as the amount of technology in our lives increases. Every time you play a computer game or figure out how to program a new cell phone, you are exercising exactly the kind of thinking and problem solving that helps you do well on one kind of intelligence test. So are you really smarter than your parents? In one very specific way, you may be.The Flynn effect must be the result of____________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 3.1 K lượt xem 5 năm trước
Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

X là chất hữu cơ có công thức phân tử C3H12N2O3. Khi cho X với dung dịch NaOH thu được một muối vô cơ và hỗn hợp 2 khí đều có khả năng làm xanh quỳ tím ẩm. Số đồng phân thỏa mãn tính chất của X là:

Hóa học Tốt nghiệp THPT
Xem chi tiết 207 lượt xem 5 năm trước
20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 13)

Quy trình chuyển gen sản sinh protein của sữa người vào cừu tạo ra cừu chuyển gen gồm các bước:1. Tạo véc tơ chứa gen người và chuyển vào tế bào xoma của cừu.2. Chọn lọc và nhân dòng tế bào chuyển gen3. Nuôi cấy tế bào xoma của cừu trong môi trường nhân tạo.4. Lấy nhân tế bào chuyển gen rồi cho vào tế bào trứng đã bị mất nhân tạo ra tế bào chuyển nhân.5. Chuyển phôi được phát triển từ tế bào chuyển nhân vào tử cung của cừu để phôi phát triển thành cơ thể.Thứ tự các bước tiến hành:

Sinh học Tốt nghiệp THPT
Xem chi tiết 414 lượt xem 5 năm trước
20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 13)

Có bao nhiều đặc điểm sau đây chỉ có ở quá trình nhân đôi ADN mà không có ở quá trình phiên mã ở sinh vật nhân thực?(1) Sự tháo xoắn đoạn ADN diễn ra theo hai hướng ngược nhau.(2) Mạch pôlinuclêôtit mới luôn được tổng hợp theo chiều từ 5' đến 3', ngược chiều với sợi ADN khuôn.(3) Ađênin của môi trường liên kết với Timin của mạch ADN khuôn trong quá trình tổng hợp.(4) Enzim nối ligaza xúc tác hình thành các liên kết hoá trị nối các đoạn mạch pôlinuclêôtit mới.(5) Điểm khởi đầu tổng hợp mạch mới nằm tại những điểm xác định ở giữa phân tử ADN.(6) Khi enzim polimeraza trượt qua thì hai mạch của ADN khuôn đóng xoắn lại với nhau.

Sinh học Tốt nghiệp THPT
Xem chi tiết 348 lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (31)__________ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is (32)__________very complex. It has never been one job it has always been many. A factor robot carries (33)__________one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different types of cleaning and carrying jobs and also has to cope with all the different shapes and positions of rooms, furniture, ornaments, cats and dogs.  (34)__________, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs (35)__________will operate the machineĐiền ô sô 35

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 337 lượt xem 5 năm trước
Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P3)

Một vật được ném ngang ở độ cao h so với mặt đất. Bỏ qua sức cản của không khí và lấy g=10m/s2. Sau 5s vật chạm đất. Độ cao h bằng

Vật lý Lớp 10
Xem chi tiết 390 lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. THE PEOPLE BEHIND THE MUSICThink for a moment about the last music album you bought. Most likely, you’ll think of the singer or band that made you want to buy the album. You might even know the name of the guitar player or the drummer. Those talented performers, however, are only some of the people in the music industry work behind the scenes, but the roles they play in the musical progress are very important. Songwriters: Songs begin with the songwriter. Some songwriters work alone, but many work in teams that combine the talents of a lyricist, who writes the words to songs, and an instrumentalist, often a piano player or guitarist, who writes the music. Many of today’s pop stars work with songwriters. For example, some of Lady Gaga’s biggest hits were written by Nadir Khayat, also known “RedOne”. Some songwriting teams have become very famous, such as Mike Stock, Matt Aitken, and Pete Waterman, who were responsible for many big 1980s pop hits. Arrangers: After a song has been written, music arrangers make it more appealing by deciding which instruments will be used, what tempo, or speed, the song will have, and whether the song should have a lower or higher pitch. A good arrangement can bring a song to life and make it a classic. Studio Musicians: Not every singer or instrumentalist can be a star, and many work in the background as studio musicians. These artists are not a part of any one musical group. Instead, they are hired for recording sessions that eventually become the albums you buy, as well as soundtracks for television shows, movies, and radio ads. Recording Engineers: Recording engineers also play a major role in creating the final sound that you hear. First, these engineers set up the recording studio, the room where the performers play, placing musicians and microphones in exactly the right places to get the best sound. Next, they use electronic equipment, such multi-track recorders, to capture the music. Finally, long after the musicians have gone home, recording engineers use a mixing board to balance the melodies and rhythms of each musician, and sometimes to incorporate special sound effects or additional tracks. Many people make a living with music. You may not recognize all of their names, but all of them work together to create the songs you love to listen toWhich sentence is NOT true about studio musicians? 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 390 lượt xem 5 năm trước
Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Cho sơ đồ chuyển hóa sau: C6H12O6 (glucozo) → X → Y → T →+ CH3COOH C6H10O4 Nhận xét nào các chất X, Y, Z và T trong sơ đồ trên là đúng?

Hóa học Tốt nghiệp THPT
Xem chi tiết 505 lượt xem 5 năm trước
Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P3)

Viên bi A khối lượng gấp đôi viên bi B. Cùng lúc, từ mái nhà, bi A được thả rơi không vận tốc đầu, bi B được ném theo phương ngang. Bỏ qua sức cản của không khí. Kết luận nào sau đây đúng?

Vật lý Lớp 10
Xem chi tiết 454 lượt xem 5 năm trước
ĐỀ 5

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.ARE HUMAN BEINGS GETTING SMARTER?Do you think you're smarter than your parents and grandparents? According to James Flynn, a professor at a New Zealand university, you are! Over the course of the last century, people who have taken IQ tests have gotten increasingly better scores-on average, three points better for every decade that has passed. This improvement is known as "the Flynn effect," and scientists want to know what is behind it. IQ tests and other similar tests are designed to measure general intelligence rather than knowledge. Flynn knew that intelligence is partly inherited from our parents and partly the result of our environment and experiences, but the improvement in test scores was happening too quickly to be explained by heredity. So what was happening in the 20th century that was helping people achieve higher scores on intelligence tests? Scientists have proposed several explanations for the Flynn effect. Some suggest that the improved test scores simply reflect an increased exposure to tests in general. Because we take so many tests, we learn test-taking techniques that help us perform better on any test. Others have pointed to better nutrition since it results in babies being born larger, healthier, and with more brain development than in the past. Another possible explanation is a change in educational styles, with teachers encouraging children to learn by discovering things for themselves rather than just memorizing information. This could prepare people to do the kind of problem solving that intelligence tests require. Flynn limited the possible explanations when he looked carefully at the test data and discovered that the improvement in scores was only on certain parts of the IQ test. Test takers didn't do better on the arithmetic or vocabulary sections of the test; they did better on sections that required a special kind of reasoning and problem solving. For example, one part of the test shows a set of abstract shapes, and test-takers must look for patterns and connections between them and decide which shape should be added to the set. According to Flynn, this visual intelligence improves as the amount of technology in our lives increases. Every time you play a computer game or figure out how to program a new cell phone, you are exercising exactly the kind of thinking and problem solving that helps you do well on one kind of intelligence test. So are you really smarter than your parents? In one very specific way, you may beThe Flynn effect is____________

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1.1 K lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (31)__________ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is (32)__________very complex. It has never been one job it has always been many. A factor robot carries (33)__________one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different types of cleaning and carrying jobs and also has to cope with all the different shapes and positions of rooms, furniture, ornaments, cats and dogs.  (34)__________, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs (35)__________will operate the machineĐiền ô số 34

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 439 lượt xem 5 năm trước
20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 13)

Cho các phát biểu sau về hệ sinh thái, số phát biểu đúng là:1. Hệ sinh thái là tập của quần thể và môi trường vô sinh của nó.2. Hệ sinh thái là một hệ thống sịnh học hoàn chỉnh như một cơ thể3. Hệ sinh thái là một động lực mở và tự điều chỉnh.4. Các sinh vật tương tác với nhau tạo nên chu trình địa hoá và sự biến đổi năng lượng.5. Hệ sinh thái hoạt động theo các quy luật nhiệt động học, trước hết là quy luật bảo toàn năng lượng.

Sinh học Tốt nghiệp THPT
Xem chi tiết 7.3 K lượt xem 5 năm trước
2.3. Xác định số đipeptit. Xác định số tripeptit

Brađikinin có tác dụng làm giảm huyết áp. Đó là một nonapeptit có công thức là: Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg  Khi thuỷ phân không hoàn toàn, số tripeptit khác nhau có chứa phenylamin (Phe) là:

Hóa học Lớp 12
Xem chi tiết 1 K lượt xem 5 năm trước
DẠNG 3 BÀI TẬP AMIN PHẢN ỨNG VỚI MUỐI

Cho 24,9 gam hỗn hợp X gồm 2 amin no đơn chức mạch hở đồng đẳng kế tiếp tác dụng với dung dịch chứa FeCl3 và CuSO4 dư thu được 21,4 gam kết tủa. Công thức và % khối lượng của 2 amin là:

Hóa học Lớp 12
Xem chi tiết 4.2 K lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (31)__________ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is (32)__________very complex. It has never been one job it has always been many. A factor robot carries (33)__________one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different types of cleaning and carrying jobs and also has to cope with all the different shapes and positions of rooms, furniture, ornaments, cats and dogs.  (34)__________, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs (35)__________will operate the machineĐiền ô số 33

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 383 lượt xem 5 năm trước
Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Cho hình vẽ mô tả thí nghiệm điều chế Y từ dung dịch X. Hình vẽ trên minh họa cho phản ứng nào sau đây? 

Hóa học Tốt nghiệp THPT
Xem chi tiết 209 lượt xem 5 năm trước
Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P3)

Ở nơi có gia tốc rơi tự do là g, từ độ cao h so với mặt đất, một vật được ném ngang với tốc độ ban đầu v. Tầm bay xa của vật là

Vật lý Lớp 10
Xem chi tiết 362 lượt xem 5 năm trước
ĐỀ 5

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.English has without a (31) ____ become the second language of Europe and the world. European countries which have most (32) ____ assimilated English into daily life are England's neighbors in Northern Europe: Ireland, the Netherlands, Sweden, Norway, and the rest of Scandinavia. The situation is so (33) ____ that any visitor to the Netherlands will soon be aware of the pressure of English on daily life: television, radio and print bring it into every home and the schoolyard conversation of children; advertisers use it to (34) ____ up their message, journalists take refuge in it when their home-bred skills fail them. Increasingly one hears the (35) ____ that Dutch will give way to English as the national tongue within two or three generations.Điền ô số 35

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 325 lượt xem 5 năm trước
2.3. Xác định số đipeptit. Xác định số tripeptit

Số tripeptit (chứa đồng thời các gốc của X, Y, Z) được tạo thành từ 3 hợp chất α-amino axit X, Y, Z là 

Hóa học Lớp 12
Xem chi tiết 5 K lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (31)__________ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is (32)__________very complex. It has never been one job it has always been many. A factor robot carries (33)__________one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different types of cleaning and carrying jobs and also has to cope with all the different shapes and positions of rooms, furniture, ornaments, cats and dogs.  (34)__________, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs (35)__________will operate the machineĐiền ô sô 32

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 381 lượt xem 5 năm trước
200 bài trắc nghiệm Oxyz cực hay có lời giải chi tiết (P1)

Trong không gian Oxyz, cho đường thẳng d: x-11=y-12=z-3-2và mặt phẳng (P): 2x - 2y + z - 3 = 0, phương trình đường thẳng  ∆ nằm trong mặt phẳng (P), cắt d và vuông góc với d là

Toán Lớp 12
Xem chi tiết 373 lượt xem 5 năm trước
2.3. Xác định số đipeptit. Xác định số tripeptit

Thủy phân hoàn toàn một tripeptit (mạch hở) thu được hỗn hợp gồm alanin và glyxin theo tỷ lệ mol là 2 : 1. Số tripeptit thỏa mãn là: 

Hóa học Lớp 12
Xem chi tiết 1.9 K lượt xem 5 năm trước
Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Cho sơ đồ phản ứng sau: Công thức cấu tạo của X là

Hóa học Tốt nghiệp THPT
Xem chi tiết 272 lượt xem 5 năm trước
Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 15)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.The Prime Minister congratulated the team _____winning the match

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1.4 K lượt xem 5 năm trước
ĐỀ 5

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.English has without a (31) ____ become the second language of Europe and the world. European countries which have most (32) ____ assimilated English into daily life are England's neighbors in Northern Europe: Ireland, the Netherlands, Sweden, Norway, and the rest of Scandinavia. The situation is so (33) ____ that any visitor to the Netherlands will soon be aware of the pressure of English on daily life: television, radio and print bring it into every home and the schoolyard conversation of children; advertisers use it to (34) ____ up their message, journalists take refuge in it when their home-bred skills fail them. Increasingly one hears the (35) ____ that Dutch will give way to English as the national tongue within two or three generationsĐiền ô số 34

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 328 lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 14)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (31)__________ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is (32)__________very complex. It has never been one job it has always been many. A factor robot carries (33)__________one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different types of cleaning and carrying jobs and also has to cope with all the different shapes and positions of rooms, furniture, ornaments, cats and dogs.  (34)__________, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs (35)__________will operate the machineĐiền ô số 31

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 529 lượt xem 5 năm trước
CÔNG TY TNHH ĐẦU TƯ VÀ DỊCH VỤ GIÁO DỤC VIETJACK
Giấy chứng nhận ĐKKD số: 0108307822 do Sở KH & ĐT TP Hà Nội cấp lần đầu ngày 04/06/2018
© 2017 Vietjack37. All Rights Reserved.
zalo Nhắn tin Zalo Hỏi bài tập

Đăng ký

Bạn đã có tài khoản?