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20 đề thi thử thpt quốc gia môn GDCD cực hay có lời giải chi tiết (Đề 5)

Nguyên nhân dẫn đến cạnh tranh là gì?

Giáo dục công dân Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 5)

Hai dao động điều hòa cùng phương, cùng tần số, có phương trình lần lượt là: x1=3cos(2πt-π4) (cm) và x2=4cos(2πt+π4) (cm). Biên độ dao động tổng hợp của hai dao động trên là

Vật lý Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật lí năm 2020 cực hay có lời giải (Đề số 19)

Hạt nhân Côban C2760o có cấu tạo gồm:

Vật lý Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật lí năm 2020 cực hay có lời giải (Đề số 19)

Dòng điện xoay chiều qua một đoạn mạch có cường độ i = Io.cosωt + φ. Đại lượng ω được gọi là

Vật lý Tốt nghiệp THPT
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Tổng hợp đề thi thử môn Tiếng Anh có lời giải chi tiết (Đề số 8)

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 43 to 50.    It's called 42 - the name taken from the answer to the meaning of life, from the science fiction series The Hitchhiker's Guide to the Galaxy. 42 was founded by French technology billionaire Xavier Niel, whose backing means there are no tuition fees and accommodation is free. Mr Niel and his co-founders come from the world of technology and start-ups, and they are trying to do to education what Facebook did to communication and Airbnb to accommodation.    Students at 42 are given a choice of projects that they might be set in a job as a software engineer - perhaps to design a website or a computer game. They complete a project using resources freely available on the Internet and by seeking help from their fellow students, who work alongside them in a large open-plan room full of computers. Another student will then be randomly assigned to mark their work.    The founders claim this method of learning makes up for shortcomings in the traditional education system, which they say encourages students to be passive recipients of knowledge. "Peer-to-peer learning develops students with the confidence to search for solutions by themselves, often in quite creative and ingenious ways."    Like in computer games, the students are asked to design and they go up a level by completing a project. They graduate when they reach level 21, which usually takes three to five years. And at the end, there is a certificate but no formal degree. Recent graduates are now working at companies including IBM, Amazon, and Tesla, as well as starting their own firms.    "The feedback we have had from employers is that our graduates are more apt to go off and find out information for themselves, rather than asking their supervisors what to do next," says Brittany Bir, chief operating officer of 42 in California and a graduate of its sister school in Paris. Ms Bir says 42's graduates will be better able to work with others and discuss and defend their ideas - an important skill in the “real world” of work. "This is particularly important in computer programming, where individuals are notorious for lacking certain human skills," she says.     But could 42's model of teacher less learning work in mainstream universities? Brittany Bir admits 42's methods do not suit all students. "It suits individuals who are very disciplined and self-motivated, and who are not scared by having the freedom to work at their own pace," she says.(Adapted from http://www.bbc.com/news/business-37694248)Which of the following is TRUE according to the passage?

Tiếng Anh Tốt nghiệp THPT
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Bài 7: Phép vị tự

Để ý rằng: điểm B nằm giữa hai điểm A và C khi và chỉ khi AB→ = tAC→, 0 < t < 1.Sử dụng ví dụ trên chứng minh rằng nếu điểm B nằm giữa hai điểm A và C thì điểm B’ nằm giữa hai điểm A’ và C’.

Toán Lớp 11
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Đề thi thử thpt quốc gia môn vật lí mới nhất (Đề 5)

Một con lắc lò xo dao động điều hòa theo phương ngang với chu kì T=2πs, vật có khối lượng m. Khi lò xo có độ dài cực đại và vật có gia tốc -2cm/s2 thì một vật có khối lượng m1m=2m1 chuyển động với tốc độ 33cm/s dọc theo trục của lò xo đến va chạm đàn hồi xuyên tâm với vật m, có hướng làm lò xo nén lại. Quãng đường mà vật m đi được từ lúc va chạm đến khi vật m đổi chiều chuyển động là

Vật lý Tốt nghiệp THPT
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20 đề thi thử thpt quốc gia môn GDCD cực hay có lời giải chi tiết (Đề 5)

Cạnh tranh là gì?

Giáo dục công dân Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 22)

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

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 28 to 34Over the past 600 years, English has grown from a language of few speakers to become the dominant language of international communication. English as we know it today emerged around 1350, after having incorporated many elements of French that were introduced following the Norman invasion of 1066. Until the 1600s, English was, for the most part, spoken only in England and had not expanded even as far as Wales, Scotland, or Ireland. However, during the course of the next two century, English began to spread around the globe as a result of exploration, trade (including slave trade), colonization, and missionary work. Thus, small enclaves of English, speakers became established and grew in various parts of the world. As these communities proliferated, English gradually became the primary language of international business, banking, and diplomacy.Currently, about 80 percent of the information stored on computer systems worldwide is in English. Two thirds of the world’s science writing is in English, and English is the main language of technology, advertising, media, international airport, and air traffic controllers. Today there are more than 700 million English users in the world, and over half of these are non-native speakers, constituting the largest number of non-native users than any other language in the world.In the first paragraph, the word “emerged” is closest in meaning to

Tiếng Anh Tốt nghiệp THPT
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20 đề thi thử thpt quốc gia môn GDCD cực hay có lời giải chi tiết (Đề 5)

Giá cả của hàng hóa trên thị trường biểu hiện như thế nào

Giáo dục công dân Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 28 to 34Over the past 600 years, English has grown from a language of few speakers to become the dominant language of international communication. English as we know it today emerged around 1350, after having incorporated many elements of French that were introduced following the Norman invasion of 1066. Until the 1600s, English was, for the most part, spoken only in England and had not expanded even as far as Wales, Scotland, or Ireland. However, during the course of the next two century, English began to spread around the globe as a result of exploration, trade (including slave trade), colonization, and missionary work. Thus, small enclaves of English, speakers became established and grew in various parts of the world. As these communities proliferated, English gradually became the primary language of international business, banking, and diplomacy.Currently, about 80 percent of the information stored on computer systems worldwide is in English. Two thirds of the world’s science writing is in English, and English is the main language of technology, advertising, media, international airport, and air traffic controllers. Today there are more than 700 million English users in the world, and over half of these are non-native speakers, constituting the largest number of non-native users than any other language in the world.What is the main topic of the passage?

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 22)

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
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Bài 7: Phép vị tự

Chứng minh nhận xét 4.M’ = VO,KM ⇔ M = VO,1/kM'.

Toán Lớp 11
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20 đề thi thử thpt quốc gia môn GDCD cực hay có lời giải chi tiết (Đề 5)

Để may một cái áo A may hết 5h. Thời gian lao động xã hội cần thiết để may cái áo là 4h. Vậy A bán giá cả chiếc áo tương ứng với mấy giờ?

Giáo dục công dân Tốt nghiệp THPT
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20 đề thi thử thpt quốc gia môn GDCD cực hay có lời giải chi tiết (Đề 5)

Sản xuất hàng hóa số lượng bao nhiêu, giá cả như thế nào, do nhân tố nào quyết định?

Giáo dục công dân Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 5)

Điện áp và dòng điện trong một mạch điện xoay chiều lần lượt có phương trình là: u=2002cos(100πt-π2) (V) và i=2cos(100πt-π6) (A), công suất tiêu thụ của đoạn mạch bằng

Vật lý Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 23 to 27In a small village in North Yorkshire, there is a big old farmhouse _______ (23) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ________ (24) the repairs, and Alice takes care of the garden.Alice, George and Sue go out to work. Joe works at home _________ (25) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away.The three families get_______ (26) well, and enjoy their way of life. There are few difficulties of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn’t too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse _______ (27) move to a luxury flat in a big city.Điền ô 27

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử môn Tiếng Anh có lời giải chi tiết (Đề số 8)

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 43 to 50.    It's called 42 - the name taken from the answer to the meaning of life, from the science fiction series The Hitchhiker's Guide to the Galaxy. 42 was founded by French technology billionaire Xavier Niel, whose backing means there are no tuition fees and accommodation is free. Mr Niel and his co-founders come from the world of technology and start-ups, and they are trying to do to education what Facebook did to communication and Airbnb to accommodation.    Students at 42 are given a choice of projects that they might be set in a job as a software engineer - perhaps to design a website or a computer game. They complete a project using resources freely available on the Internet and by seeking help from their fellow students, who work alongside them in a large open-plan room full of computers. Another student will then be randomly assigned to mark their work.    The founders claim this method of learning makes up for shortcomings in the traditional education system, which they say encourages students to be passive recipients of knowledge. "Peer-to-peer learning develops students with the confidence to search for solutions by themselves, often in quite creative and ingenious ways."    Like in computer games, the students are asked to design and they go up a level by completing a project. They graduate when they reach level 21, which usually takes three to five years. And at the end, there is a certificate but no formal degree. Recent graduates are now working at companies including IBM, Amazon, and Tesla, as well as starting their own firms.    "The feedback we have had from employers is that our graduates are more apt to go off and find out information for themselves, rather than asking their supervisors what to do next," says Brittany Bir, chief operating officer of 42 in California and a graduate of its sister school in Paris. Ms Bir says 42's graduates will be better able to work with others and discuss and defend their ideas - an important skill in the “real world” of work. "This is particularly important in computer programming, where individuals are notorious for lacking certain human skills," she says.     But could 42's model of teacher less learning work in mainstream universities? Brittany Bir admits 42's methods do not suit all students. "It suits individuals who are very disciplined and self-motivated, and who are not scared by having the freedom to work at their own pace," she says.(Adapted from http://www.bbc.com/news/business-37694248)What do 42’s graduates receive on completion of their course?

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 22)

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
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20 đề thi thử thpt quốc gia môn GDCD cực hay có lời giải chi tiết (Đề 5)

Ngày 17/06/2017 1USD đổi được 22437 VNĐ, điều này được gọi là gì?

Giáo dục công dân Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 23 to 27In a small village in North Yorkshire, there is a big old farmhouse _______ (23) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ________ (24) the repairs, and Alice takes care of the garden.Alice, George and Sue go out to work. Joe works at home _________ (25) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away.The three families get_______ (26) well, and enjoy their way of life. There are few difficulties of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn’t too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse _______ (27) move to a luxury flat in a big city.Điền ô 26

Tiếng Anh Tốt nghiệp THPT
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Bài 7: Phép vị tự

Cho tam giác ABC. Gọi E và F tương ứng là trung điểm của AB và AC. Tìm một phép vị tự biến B và C tương ứng thành E và F.

Toán Lớp 11
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Tổng hợp đề thi thử môn Tiếng Anh có lời giải chi tiết (Đề số 8)

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 43 to 50.    It's called 42 - the name taken from the answer to the meaning of life, from the science fiction series The Hitchhiker's Guide to the Galaxy. 42 was founded by French technology billionaire Xavier Niel, whose backing means there are no tuition fees and accommodation is free. Mr Niel and his co-founders come from the world of technology and start-ups, and they are trying to do to education what Facebook did to communication and Airbnb to accommodation.    Students at 42 are given a choice of projects that they might be set in a job as a software engineer - perhaps to design a website or a computer game. They complete a project using resources freely available on the Internet and by seeking help from their fellow students, who work alongside them in a large open-plan room full of computers. Another student will then be randomly assigned to mark their work.    The founders claim this method of learning makes up for shortcomings in the traditional education system, which they say encourages students to be passive recipients of knowledge. "Peer-to-peer learning develops students with the confidence to search for solutions by themselves, often in quite creative and ingenious ways."    Like in computer games, the students are asked to design and they go up a level by completing a project. They graduate when they reach level 21, which usually takes three to five years. And at the end, there is a certificate but no formal degree. Recent graduates are now working at companies including IBM, Amazon, and Tesla, as well as starting their own firms.    "The feedback we have had from employers is that our graduates are more apt to go off and find out information for themselves, rather than asking their supervisors what to do next," says Brittany Bir, chief operating officer of 42 in California and a graduate of its sister school in Paris. Ms Bir says 42's graduates will be better able to work with others and discuss and defend their ideas - an important skill in the “real world” of work. "This is particularly important in computer programming, where individuals are notorious for lacking certain human skills," she says.     But could 42's model of teacher less learning work in mainstream universities? Brittany Bir admits 42's methods do not suit all students. "It suits individuals who are very disciplined and self-motivated, and who are not scared by having the freedom to work at their own pace," she says.(Adapted from http://www.bbc.com/news/business-37694248)The author mentions “to design a website or a computer game” in paragraph 2 to illustrate___.

Tiếng Anh Tốt nghiệp THPT
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Bài 2: Cực trị của hàm số

Giả sử f(x) đạt cực đại tại xo. Hãy chứng minh khẳng định 3 trong chú ý trên bằng cách xét giới hạn tỉ số fxo+∆x-f'xo∆x khi Δx → 0 trong hai trường hợp Δx > 0 và Δx < 0.

Toán Lớp 12
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 23 to 27In a small village in North Yorkshire, there is a big old farmhouse _______ (23) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ________ (24) the repairs, and Alice takes care of the garden.Alice, George and Sue go out to work. Joe works at home _________ (25) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away.The three families get_______ (26) well, and enjoy their way of life. There are few difficulties of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn’t too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse _______ (27) move to a luxury flat in a big city.Điền ô 25

Tiếng Anh Tốt nghiệp THPT
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Bài 22: lực Lo-ren-xơ

Một ion bay theo quỹ đạo tròn bán kính R trong một mặt phẳng vuông góc với các đường sức của một từ trường đều. Khi độ lớn của vận tốc tăng gấp đôi thì bán kính quỹ đạo là bao nhiêu

Vật lý Lớp 11
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Đề minh họa đề thi Vật Lí cực hay có lời giải (Đề số 2)

Hai quả cầu bằng chì mỗi quả có khối lượng 45kg, bán kính 10cm. Lực hấp dẫn giữa chúng có thể đạt giá trị lớn nhất là

Vật lý Tốt nghiệp THPT
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Tổng hợp đề thi thử môn Tiếng Anh có lời giải chi tiết (Đề số 8)

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 43 to 50.    It's called 42 - the name taken from the answer to the meaning of life, from the science fiction series The Hitchhiker's Guide to the Galaxy. 42 was founded by French technology billionaire Xavier Niel, whose backing means there are no tuition fees and accommodation is free. Mr Niel and his co-founders come from the world of technology and start-ups, and they are trying to do to education what Facebook did to communication and Airbnb to accommodation.    Students at 42 are given a choice of projects that they might be set in a job as a software engineer - perhaps to design a website or a computer game. They complete a project using resources freely available on the Internet and by seeking help from their fellow students, who work alongside them in a large open-plan room full of computers. Another student will then be randomly assigned to mark their work.    The founders claim this method of learning makes up for shortcomings in the traditional education system, which they say encourages students to be passive recipients of knowledge. "Peer-to-peer learning develops students with the confidence to search for solutions by themselves, often in quite creative and ingenious ways."    Like in computer games, the students are asked to design and they go up a level by completing a project. They graduate when they reach level 21, which usually takes three to five years. And at the end, there is a certificate but no formal degree. Recent graduates are now working at companies including IBM, Amazon, and Tesla, as well as starting their own firms.    "The feedback we have had from employers is that our graduates are more apt to go off and find out information for themselves, rather than asking their supervisors what to do next," says Brittany Bir, chief operating officer of 42 in California and a graduate of its sister school in Paris. Ms Bir says 42's graduates will be better able to work with others and discuss and defend their ideas - an important skill in the “real world” of work. "This is particularly important in computer programming, where individuals are notorious for lacking certain human skills," she says.     But could 42's model of teacher less learning work in mainstream universities? Brittany Bir admits 42's methods do not suit all students. "It suits individuals who are very disciplined and self-motivated, and who are not scared by having the freedom to work at their own pace," she says.(Adapted from http://www.bbc.com/news/business-37694248)The word “them” in paragraph 2 refers to .

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 23 to 27In a small village in North Yorkshire, there is a big old farmhouse _______ (23) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ________ (24) the repairs, and Alice takes care of the garden.Alice, George and Sue go out to work. Joe works at home _________ (25) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away.The three families get_______ (26) well, and enjoy their way of life. There are few difficulties of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn’t too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse _______ (27) move to a luxury flat in a big city.Điền ô 24

Tiếng Anh Tốt nghiệp THPT
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Bài 6: Khái niệm về phép dời hình và hai hình bằng nhau

Chứng minh rằng: Nếu một phép dời hình biến tam giác ABC thành tam giác A’B’C’ thì nó cũng biến trọng tâm của tam giác ABC tương ứng thành trọng tâm của tam giác A’B’C’.

Toán Lớp 11
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Bài 6: Khái niệm về phép dời hình và hai hình bằng nhau

Cho hình chữ nhật ABCD. Gọi E, E, H, K, O, I, J lần lượt là trung điểm của các cạnh AB, BC, CD, DA, KF, HC, KO. Chứng minh hai hình thang AEJK và FOIC bằng nhau.

Toán Lớp 11
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

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 23 to 27In a small village in North Yorkshire, there is a big old farmhouse _______ (23) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ________ (24) the repairs, and Alice takes care of the garden.Alice, George and Sue go out to work. Joe works at home _________ (25) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away.The three families get_______ (26) well, and enjoy their way of life. There are few difficulties of course. Their biggest worry at the moment is money- one of the cars needs replacing, and the roof needs some expensive repairs. But this isn’t too serious- the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse _______ (27) move to a luxury flat in a big city.Điền ô 23

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử thpt quốc gia môn vật lí mới nhất (Đề 5)

Thí nghiệm giao thoa với ánh sáng trắng 0,4μm≤λ≤0,76μm. Độ rộng phổ bậc 1 là ∆x1=0,9cm. Độ rộng phần chồng lên nhau của phổ bậc 3 và phổ bậc 4 là

Vật lý Tốt nghiệp THPT
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Tuyển tập đề thi thử thpt quốc gia môn Vật lý cực hay có lời giải (Đề số 2)

Lần lượt đặt vào hai đầu đoạn mạch xoay chiều gồm biến trở R, cuộn cảm thuần L và tụ điện C nối tiếp hai điện áp xoay chiểu u1=U12cosω1t+φ1V và u2=U22cosω2t+φ2V. Người ta thu được đồ thị công suất toàn mạch theo biến trở R như hình vẽ. Biết rằng P2max=x. Giá trị của x gần giá trị nào sau đây nhất?

Vật lý Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 5)

Một máy phát điện xoay chiều một pha có phần cảm là roto với số cặp cực là p. Khi rôt quay đều với tốc độ n vòng/s thì từ thông qua mỗi cuộn dây của stato biến thiên tuần hoàn với tần số (tính theo đơn vị Hz) là

Vật lý Tốt nghiệp THPT
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Bài 6: Khái niệm về phép dời hình và hai hình bằng nhau

Trong mặt phẳng Oxy cho các điểm A(-3;2), B(-4;5) và C(-1;3).a. Chứng minh rằng các điểm A’(2;3), B’(5;4) và C’(3;1) theo thứ tự là ảnh của A, B và C qua phép quay tâm O góc –90o.b. Gọi tam giác A1B1C1 là ảnh của tam giác ABC qua phép dời hình có được bằng cách thực hiện liên tiếp phép quay tâm O góc –90o và phép đối xứng qua trục Ox. Tìm tọa độ các đỉnh của tam giác A1B1C1.

Toán Lớp 11
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Bài 22: lực Lo-ren-xơ

Một e bay với vận tốc v=1,8.106 m/s vào trong từ trường đều B = 0,25 T theo hướng hợp với B một góc 60°. Giá trị của bước ốc δ là

Vật lý Lớp 11
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions_________ you study harder, you won’t pass the examination

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử môn Tiếng Anh có lời giải chi tiết (Đề số 8)

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 43 to 50.    It's called 42 - the name taken from the answer to the meaning of life, from the science fiction series The Hitchhiker's Guide to the Galaxy. 42 was founded by French technology billionaire Xavier Niel, whose backing means there are no tuition fees and accommodation is free. Mr Niel and his co-founders come from the world of technology and start-ups, and they are trying to do to education what Facebook did to communication and Airbnb to accommodation.    Students at 42 are given a choice of projects that they might be set in a job as a software engineer - perhaps to design a website or a computer game. They complete a project using resources freely available on the Internet and by seeking help from their fellow students, who work alongside them in a large open-plan room full of computers. Another student will then be randomly assigned to mark their work.    The founders claim this method of learning makes up for shortcomings in the traditional education system, which they say encourages students to be passive recipients of knowledge. "Peer-to-peer learning develops students with the confidence to search for solutions by themselves, often in quite creative and ingenious ways."    Like in computer games, the students are asked to design and they go up a level by completing a project. They graduate when they reach level 21, which usually takes three to five years. And at the end, there is a certificate but no formal degree. Recent graduates are now working at companies including IBM, Amazon, and Tesla, as well as starting their own firms.    "The feedback we have had from employers is that our graduates are more apt to go off and find out information for themselves, rather than asking their supervisors what to do next," says Brittany Bir, chief operating officer of 42 in California and a graduate of its sister school in Paris. Ms Bir says 42's graduates will be better able to work with others and discuss and defend their ideas - an important skill in the “real world” of work. "This is particularly important in computer programming, where individuals are notorious for lacking certain human skills," she says.     But could 42's model of teacher less learning work in mainstream universities? Brittany Bir admits 42's methods do not suit all students. "It suits individuals who are very disciplined and self-motivated, and who are not scared by having the freedom to work at their own pace," she says.(Adapted from http://www.bbc.com/news/business-37694248)According to the passage, 42 is .

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questionsRemember to take ________ your shoes when you go into the temple

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questionsJapanese, Korean, Russian, Chinese, French and German will be taught at general schools in Hanoi and HCM City before being ________on a large scale throughout the country

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật lí năm 2020 cực hay có lời giải (Đề số 19)

Công thức liên hệ giữa tốc độ sóng v, bước sóng λ, chu kì T và tần số f của sóng là

Vật lý Tốt nghiệp THPT
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Bài 6: Khái niệm về phép dời hình và hai hình bằng nhau

Cho hình chữ nhật ABCD. Gọi I là giao điểm của AC và BD. Gọi E, F theo thứ tự là trung điểm của AD và BC. Chứng minh rằng các hình thang AEIB và CFID bằng nhau.

Toán Lớp 11
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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 5)

Máy biến áp là thiết bị dùng để

Vật lý Tốt nghiệp THPT
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Tổng hợp đề thi thử môn Tiếng Anh có lời giải chi tiết (Đề số 8)

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.    Whales are the largest animals in the world, and the gentlest creatures we know. Although the whale is very huge, it is not hindered at all by its size when it is in the water. Whales have tails that end like flippers. With just a gentle flick, it can propel itself forward. The skin of a whale is so smooth that it does not create any friction that can slow the whale down. A whale’s breathing hole is located on the top of its head, so it can breathe without having to completely push its head out of the water. Whales are protected from the cold seawater by body fat that is called blubber.     Whales live in the ocean but, in terms of behaviours, they are more similar to humans than fish. They live in family groups and they even travel in groups when they have to migrate from cooler to warmer waters. The young stay with their parents for as long as fifteen years. Whales are known not to desert the ill or injured members; instead, they cradle them.    When whales are in danger, there are people who go to great lengths to help them. One such case occurred in 1988, when three young whales were trapped in the sea. It was close to winter and the sea had begun to freeze over. Whales are mammals that require oxygen from the air, so the frozen ice was a great danger to them. All they had then was a tiny hole in the ice for them to breathe through. Volunteers from all over soon turned up to help these creatures. They cut holes in the ice to provide more breathing holes for the whales. These holes would also serve as guides for the whales so that they could swim to warmer waters.(Adapted from http://www.englishdaily626.com?reading_comprehension)According to the passage, why was the frozen ice on the sea surface a danger to whales?

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questionsMy sister and her husband ________ over to my house for dinner tomorrow evening

Tiếng Anh Tốt nghiệp THPT
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Bài 6: Khái niệm về phép dời hình và hai hình bằng nhau

Cho hình chữ nhật ABCD. Gọi E, F, H, I theo thứ tự là trung điểm của các cạnh AB, CD, BC, EF. Hãy tìm một phép dời hình biến tam giác AEI thành tam giác FCH (h.1.46)

Toán Lớp 11
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questionsHer family has gone to Edinburgh to pay their last _________ to uncle Bin who died last week

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questionsYou should concentrate on _________ the teacher is saying

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