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Bài tập về Este - Lipit cực hay có lời giải chi tiết (P5)

Hỗn hợp E gồm X, Y là hai axit đồng đẳng kế tiếp, Z, T là hai este (đều hai chức, mạch hở, Y và Z là đồng phân của nhau, MT – MZ = 14). Đốt cháy hoàn toàn 12,84 gam E cần vừa đủ 0,37 mol O2, thu được CO2 và H2O. Mặt khác, cho 12,84 gam E phản ứng vừa đủ với 220ml dung dịch NaOH 1M. Cô cạn dung dịch sau phản ứng thu được hỗn hợp muối khan G của các axit cacboxylic và 2,8 gam hỗn hợp ba ancol có cùng số mol. Khối lượng muối của axit có phân tử khối lớn nhất trong G là 

Hóa học Lớp 12
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.Ignoring the danger to himself, Freddie dived into the river to save the puppy

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 08)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Even on the most careful prepared trip, problems will sometimes happen.

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Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions Please cut my hair ____ the style in this magazine

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Indicate the word or phrase that is closest in meaning to the underlined part in each of the following questions.This college emphasizes the primacy of teaching over research

Tiếng Anh Tốt nghiệp THPT
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Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P1)

Cho ba lực đồng quy, cùng độ lớn F và cùng nằm trong một mặt phẳng. Biết góc tạo bởi các lưc F1→, F2→ = F3→, F4→=120 . Hợp lực của chúng bằng

Vật lý Lớp 10
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9 Bài tập thủy phân hỗn hợp chứa polisaccarit

Chia hỗn hợp tinh bột và xenlulozơ thành 2 phần bằng nhau. Đốt cháy hoàn toàn phần một, thu được số mol CO2 nhiều hơn số mol H2O là 0,03 mol. Thủy phân hoàn toàn phần hai trong môi trường axit, cho toàn bộ lượng monosaccarit tạo thành tác dụng với AgNO3 dư (trong dung dịch NH3, to), thu được tối đa m gam Ag. Giá trị của m là

Hóa học Lớp 12
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Indicate the word or phrase that is closest in meaning to the underlined part in each of the following questions. The medical community continues to make progress in the fight against cancer. 

Tiếng Anh Tốt nghiệp THPT
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Bài tập về Este - Lipit cực hay có lời giải chi tiết (P5)

Hỗn hợp 4 este đều có công thức C8H8O2 và có vòng benzen. Cho 16,32 gam E tác dụng tối đa với V ml dung dịch NaOH 1M (đun nóng), thu được hỗn hợp X gồm các ancol và 18,78 gam hỗn hợp muối. Cho toàn bộ X vào bình đựng kim loại Na dư, sau phản ứng kết thúc khối lượng chất rắn trong bình tăng 3,83 gam so với ban đầu. Giá trị của V là 

Hóa học Lớp 12
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ĐỀ 4

Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions ___ are unpleasant, but it will be nice when we get in to the new house

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ĐỀ 4

Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questionsThe teacher at this school ____ with flu one after the other

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Bài tập về Este - Lipit cực hay có lời giải chi tiết (P5)

Hỗn hợp E gồm ba este mạch hở, đều có bốn liên kết pi (π) trong phân tử, trong đó có một este đơn chức là este của axit metacrylic và hai este hai chức là đồng phân của nhau. Đốt cháy hoàn toàn 12,22 gam E bằng O2, thu được 0,37 mol H2O. Mặt khác, cho 0,36 mol E phản ứng vừa đủ với 234 ml dung dịch NaOH 2,5M, thu đươc hỗn hợp X gồm các muối của các axit cacboxylic không no, có cùng số nguyên tử cacbon trong phân tử; hai ancol không no, đơn chức có khối lượng m1 gam và một ancol no, đơn chức có khối lượng m2 gam. Tỉ lệ m1 : m2 có giá trị gần nhất với giá trị nào sau đây?

Hóa học Lớp 12
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ĐỀ 4

Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questionsThe surgeon tried to save the man but unluckily the ___ was not successful

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Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions Over 20 years ___ but I never forgot the time we first met each other

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 08)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. The pilot and the crew divided the life preservers between the twenty frantic passengers

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Indicate the word or phrase that is closest in meaning to the underlined part in each of the following questions.In most countries, compulsory military service does not apply to women

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 08)

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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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions or the correct question to each of the following answers .Customer: Can I have a look at that pullover, please?     Salesgirl: “__________.”

Tiếng Anh Tốt nghiệp THPT
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Bài tập về Este - Lipit cực hay có lời giải chi tiết (P5)

Hỗn hợp E gồm ba este mạch hở, đều có bốn liên kết π trong phân tử, trong đó có một este đơn chức là este của axit metacrylic và hai este hai chức là đồng phân của nhau. Đốt cháy hoàn toàn 12,22 gam E bằng O2, thu được 0,37 mol H2O. Mặt khác, cho 0,36 mol E phản ứng vừa đủ với 234 ml dung dịch NaOH 2,5M, thu đươc hỗn hợp X gồm các muối của các axit cacboxylic không no, có cùng số nguyên tử cacbon trong phân tử; hai ancol không no, đơn chức có khối lượng m1 gam và một ancol no, đơn chức có khối lượng m2 gam. Tỉ lệ m1 : m2 có giá trị gần nhất với giá trị nào sau đây?

Hóa học Lớp 12
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 08)

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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Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P1)

Cho ba lực đồng phẳng, đồng quy F1→  ,F2→, F3→ có độ lớn lần lượt là 16 N, 12 N và 12 N. Biết góc tạo bởi các lực F1→,F2→=30∘ và F2→,F3→=120∘. Độ lớn hợp lực của ba lực này là 

Vật lý Lớp 10
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 08)

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.

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Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questionsAnne was not ___ to think that the test was too difficult 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 08)

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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ĐỀ 4

Mark the letter A, B, C, D on our answer sheet to show the underlined part that need correctionIn order to survive, trees rely to the amount of annual rainfall they receive as well as the seasonal distribution of the rain

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ĐỀ 4

Mark the letter A, B, C, D on our answer sheet to show the underlined part that need correction Salmon lay their eggs, and die in freshwater although they live in salt water when most of their adults lives

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Mark the letter A, B, C, D on our answer sheet to show the underlined part that need correctionPsychological experiment indicate that people remember more math problems that they can’t solve than those they are able to solve

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ĐỀ 4

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the pronunciation in each of the following questions

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ĐỀ 4

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the pronunciation in each of the following questions 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsThe passage mainly discusses ______. 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsWhich of the following statements is NOT true according to the passage?

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ĐỀ 4

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

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsIt can be inferred from the passage that social workers, employers, and politicians concern themselves with the study of learning because they need to ______. 

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ĐỀ 4

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

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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsAccording to the passage, the study of learning is important in many fields due to ______. 

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Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P1)

Một chất điểm chịu tác dụng của ba lực đồng phẳng, đồng quy có cùng độ lớn 15 N. Biết góc tạo bởi các lực F1→, F2→ = F3→, F4→=60 . Hợp lực của ba lực này có độ lớn là

Vật lý Lớp 10
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsWhich of the following can be inferred about the learning process from the passage?

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsGetting married, raising children, and finding and keeping a job are mentioned in paragraph 2 as examples of ______. 

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions or the correct question to each of the following answers .Ellen: "_________________?"         - Tom : "He's tall and thin with blue eyes." 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsAccording to the passage, what are children NOT usually taught outside the classroom? 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives. Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings, friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.     Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians, and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.     Learning is closely related to memory, which is the storage of information in the brain. Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result of a person’s experiences.           There are many forms of learning, ranging from simple to complex. Simple forms of learning involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skillsAccording to the passage, which of the following is learning in broad view comprised of? 

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.“You damaged my bicycle, John.” said Margaret. 

Tiếng Anh Tốt nghiệp THPT
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Bài tập về Este - Lipit cực hay có lời giải chi tiết (P5)

Tiến hành thí nghiệm theo các bước sau:Bước 1: Cho vào 3 ống nghiệm, mỗi ống 2-3 giọt etyl axetat, sau đó thêm vào ống nghiệm thứ nhất 3 ml dung dịch H2SO4 1M, ống nghiệm thứ hai 3 ml NaOH 3M, ống nghiệm thứ ba 3 ml nước cất. Bước 2: Lắc đều, sau đó đun cách thủy 3 ống nghiệm trong nồi nước nóng 75oC trong 5 phút.Bước 3: Làm lạnh các ống nghiệm về nhiệt độ thường.Cho các phát biểu sau:(a)  Sau bước 3, chất lỏng ở ba ống nghiệm đều phân thành hai lớp.(b)  Sau bước 3, chất lỏng ở ba ống nghiệm đều trở thành đồng nhất.(c) Sau bước 3, có hai ống nghiệm chất lỏng trở thành đồng nhất và ở ống nghiệm còn lại chất lỏng phân thành hai lớp.(d) Sau bước 1, có hai ống nghiệm chất lỏng phân thành hai lớp và ở ống nghiệm còn lại chất lỏng trở thành đồng nhất.(e) Sau bước 1, chất lỏng ở cả ba ống nghiệm đều phân thành hai lớp.(g) Ở bước 2, có một ống nghiệm xảy ra phản ứng thủy phân este.Số phát biểu đúng là

Hóa học Lớp 12
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.I assure you that _______. 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be able to adapt. Food Resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.    The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time – a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago. When approximately 95 percent of all species died, mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, affection even organisms not living in the oceans. Such a change would probably lead to a mass extinction.           One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. This periodic extinction might be due to intersection of the Earth’s orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species’ survival may have nothing to do with its ability or inability to adapt. If so, some of evolutionary history may reflect a sequence of essentially random eventsIn paragraph 3, the author makes which of the following statements about a species’ survival? 

Tiếng Anh Tốt nghiệp THPT
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Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P1)

 Một chất điểm chịu tác dụng của hai lực thành phần có độ lớn 6 N là 8 N. Biết hợp lực của hai lực này có giá trị 10 N, góc tạo bởi hai lực này là 

Vật lý Lớp 10
Xem chi tiết 30.8 K lượt xem 5 năm trước
Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 13)

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. I should very much like to have gone to that party of theirs, but _______. 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be able to adapt. Food Resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.    The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time – a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago. When approximately 95 percent of all species died, mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, affection even organisms not living in the oceans. Such a change would probably lead to a mass extinction.           One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. This periodic extinction might be due to intersection of the Earth’s orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species’ survival may have nothing to do with its ability or inability to adapt. If so, some of evolutionary history may reflect a sequence of essentially random eventsWhich of the following can be inferred from the theory of periodic extinction mentioned in paragraph 3? 

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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be able to adapt. Food Resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.    The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time – a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago. When approximately 95 percent of all species died, mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, affection even organisms not living in the oceans. Such a change would probably lead to a mass extinction.           One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. This periodic extinction might be due to intersection of the Earth’s orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species’ survival may have nothing to do with its ability or inability to adapt. If so, some of evolutionary history may reflect a sequence of essentially random eventsWhy is “plankton” mentioned in line 14? 

Tiếng Anh Tốt nghiệp THPT
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.     It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be able to adapt. Food Resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.    The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time – a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago. When approximately 95 percent of all species died, mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, affection even organisms not living in the oceans. Such a change would probably lead to a mass extinction.           One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. This periodic extinction might be due to intersection of the Earth’s orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species’ survival may have nothing to do with its ability or inability to adapt. If so, some of evolutionary history may reflect a sequence of essentially random eventsThe word “demise” is closest in meaning to 

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