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Phản ứng trùng hợp

Trong các polime sau: polietilen; poli(vinyl clorua); nilon -6,6; tơ nitron; cao su buna-S; poli(phenol-fomanđehit); tơ visco; poli(metyl metacrylat). Số polime được điều chế từ phản ứng trùng hợp là

Hóa học Lớp 12
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and mark the letter A, B, C or D on your answer sheet to choose the best answer for each of the question from 43- 50 American movies create myths about college life in the United States. These stories are entertaining, but they are not true. You have to look beyond Hollywood movies to understand what college is really like.Thanks to the movies, many people believe that college students party and socialize more than they study. Movies almost never show students working hard in class or in the library. Instead, movies show them eating, talking, hanging out, or dancing to loud music at wild parties. While it is true that American students have the freedom to participate in activities, they also have academic responsibilities. In order to succeed, they have to attend classes and study hard. Another movie myth is that athletics is the only important extracurricular activity. In fact, there is a wide variety of nonacademic activities on campus such as special clubs, service organizations, art, and theater programs. This variety allows students to choose what interests them. Even more important, after graduation, students’ résumés look better to employers if they list a few extracurricular activities.Most students in the movies can easily afford higher education. If only this were true! While it is true that some American college students are wealthy, most are from families with moderate incomes. Up to 80% of them get some type of financial aid. Students from middle and lower-income families often work part-time throughout their college years. There is one thing that many college students have in common, but it is not something you will see in the movies. They have parents who think higher education is a priority, a necessary and important part of their children's lives.Movies about college life usually have characters that are extreme in some way: super athletic, super intelligent, super wealthy, super glamorous, etc. Movies use these stereotypes, along with other myths of romance and adventure because audiences like going to movies that include these elements. Of course, real college students are not like movie characters at all.So the next time you want a taste of the college experience, do not go to the movies. Look at some college websites or brochures instead. Take a walk around your local college campus. Visit a few classes. True, you may not be able to see the same people or exciting action you will see in the movies, but you can be sure that there are plenty of academic adventures going on all around you!Which of the following is NOT true?

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

He lost in the election because he is a weak and _________ leader.

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and mark the letter A, B, C or D on your answer sheet to choose the best answer for each of the question from 43- 50 American movies create myths about college life in the United States. These stories are entertaining, but they are not true. You have to look beyond Hollywood movies to understand what college is really like.Thanks to the movies, many people believe that college students party and socialize more than they study. Movies almost never show students working hard in class or in the library. Instead, movies show them eating, talking, hanging out, or dancing to loud music at wild parties. While it is true that American students have the freedom to participate in activities, they also have academic responsibilities. In order to succeed, they have to attend classes and study hard. Another movie myth is that athletics is the only important extracurricular activity. In fact, there is a wide variety of nonacademic activities on campus such as special clubs, service organizations, art, and theater programs. This variety allows students to choose what interests them. Even more important, after graduation, students’ résumés look better to employers if they list a few extracurricular activities.Most students in the movies can easily afford higher education. If only this were true! While it is true that some American college students are wealthy, most are from families with moderate incomes. Up to 80% of them get some type of financial aid. Students from middle and lower-income families often work part-time throughout their college years. There is one thing that many college students have in common, but it is not something you will see in the movies. They have parents who think higher education is a priority, a necessary and important part of their children's lives.Movies about college life usually have characters that are extreme in some way: super athletic, super intelligent, super wealthy, super glamorous, etc. Movies use these stereotypes, along with other myths of romance and adventure because audiences like going to movies that include these elements. Of course, real college students are not like movie characters at all.So the next time you want a taste of the college experience, do not go to the movies. Look at some college websites or brochures instead. Take a walk around your local college campus. Visit a few classes. True, you may not be able to see the same people or exciting action you will see in the movies, but you can be sure that there are plenty of academic adventures going on all around you!Which of the following is true according to the passage?

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38 Bài tập thủy phân polisaccarit

Khối lượng tinh bột cần dùng để điều chế 1,15 lít rượu etylic 40o là: (Cho biết khối lượng riêng của ancol etylic = 0,8 g/ml và hiệu suất của quá trình lên men và thủy phân lần lượt là 80% và 70%)

Hóa học Lớp 12
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

Helen has just bought ______________. 

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Phản ứng trùng hợp

Cho các polime sau: thủy tinh hữu cơ, tơ olon, tơ lapsan, poli (vinyl axetat), poli etilen, tơ capron, cao su buna-S, tơ nilon-6,6. Số polime được điều từ phản ứng trùng hợp (hoặc đồng trùng hợp) là

Hóa học Lớp 12
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPWhich of the following could best serve as the title of the passage?

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

Maria has only one eye, she lost ______ 3 years ago after falling on some broken glass

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPAll of the following are mentioned as those whose performance is affected by ‘sleep debt’ EXCEPT_____.

Tiếng Anh Tốt nghiệp THPT
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Phản ứng trùng hợp

Cho các polime sau: tơ nilon-6,6 (1); poli(ure-fomanđehit) (2); tơ olon (3); teflon (4); poli(metyl metacrylat) (5); poli(phenol-fomanđehit) (6); tơ capron (7); cao su cloropren (8). Số polime được điều chế bằng phản ứng trùng hợp là

Hóa học Lớp 12
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38 Bài tập thủy phân polisaccarit

Tại một nhà máy, etanol được sản xuất từ tinh bột theo sơ đồ dưới đây với hiệu suất của cả quá trình là 60%:Tinh bột→Glucozơ→EtanolToàn bộ lượng etanol sau đó được pha chế thành rượu 40o. Để sản xuất được 460 lít rượu 40o cần bao nhiêu kg tinh bột (biết khối lượng riêng của etanol là 0,8 g/mL)?

Hóa học Lớp 12
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

His father is a bank manager, ______ makes him easy to have a good job.

Tiếng Anh Tốt nghiệp THPT
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Bộ đề luyện thi Hóa Học cực hay có lời giải chi tiết (Đề số 13)

Axetilen (C2H2) thuộc dãy đồng đẳng nào sau đây?

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPWhich of the following would the writer of the passage approve of?

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

I’d rather you ______ for me here.

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Phản ứng trùng hợp

Trong các polime sau: (1) poli(metyl metacrylat); (2) polistiren; (3) nilon - 7; (4) poli(etylen-terephtalat); (5) nilon-6,6; (6) poli(vinyl axetat), (7) tơ nitron. Các polime là sản phẩm của phản ứng trùng hợp là:

Hóa học Lớp 12
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPThe word “which” in the third paragraph refers to______.

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Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P1)

Một chất điểm chuyển động dưới tác dụng của hai lực có giá đồng quy F1→  và F2→  thì vectơ gia tốc của chất điểm 

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)

_______ he took off his dark glasses, I recognized him

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38 Bài tập thủy phân polisaccarit

Từ m kg khoai có chứa 25% tinh bột, bằng phương pháp lên men người ta điều chế được 100 lít rượu 60o. Giá trị của m là: (biết khối lượng riêng của C2H5OH là 0,8 g/ml hiệu suất chung của cả quá trình là 90%)

Hóa học Lớp 12
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPAccording to the third paragraph, which of the following statements is NOT TRUE?

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

______ a famous personality has its advantages and its disadvantages

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Phản ứng trùng hợp

Có một số hợp chất sau: (1) etilen, (2) vinyl clorua, (3) axit ađipic, (4) phenol, (5) acrilonitrin, (6) buta -1,3 - đien. Những chất tham gia phản ứng trùng hợp là

Hóa học Lớp 12
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPThe writer mentions the Internet in the passage as______.

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38 Bài tập thủy phân polisaccarit

Nấu chín m kg gạo nếp (chứa 80% tinh bột) rồi trộn với men và đem ủ. Kết thúc quá trình lên men, thu được 23 lít etanol. Biết hiệu suất của cả quá trình là 60% và khối lượng riêng của etanol là 0,8 g/mL. Giá trị của m là

Hóa học Lớp 12
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. He _______ on his computer for more than two hours when he decided to stop for a rest

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

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. We live in a world of tired, sleep deprived people. In his book Counting Sheep, Paul Martin – a behavioural biologist – describes a society which is just too busy to sleep and which does not give sleeping the importance it deserves.           Modern society has invented reasons not to sleep. We are now a 24/7 society where shops and services must be available all hours. We spend longer hours at work than we used to, and more time getting to work. Mobile phones and email allow us to stay in touch round the clock and late-night TV and the Internet tempt us away from our beds. When we need more time for work or pleasure, the easy solution is to sleep less. The average adult sleeps only 6.2 hours a night during the week, whereas research shows that most people need eight or even eight and a half hours’ sleep to feel at their best. Nowadays, many people have got used to sleeping less than they need and they live in an almost permanent state of ‘sleep debt’.           Until the invention of the electric light in 1879 our daily cycle of sleep used to depend on the hours of daylight. People would get up with the sun and go to bed at nightfall. But nowadays our hours of sleep are mainly determined by our working hours (or our social life) and most people are woken up artificially by an alarm clock. During the day caffeine, the world’s most popular drug, helps to keep us awake. 75% of the world’s population habitually consume caffeine, which up to a point masks the symptoms of sleep deprivation.What does a chronic lack of sleep do to us? As well as making us irritable and unhappy as humans, it also reduces our motivation and ability to work. This has serious implications for society in general. Doctors, for example, are often chronically sleep deprived, especially when they are on ‘night call’, and may get less than three hours’ sleep. Lack of sleep can seriously impair their mood, judgment, and ability to take decisions. Tired engineers, in the early hours of the morning, made a series of mistakes with catastrophic results. On our roads and motorways lack of sleep kills thousands of people every year. Tests show that a tired driver can be just as dangerous as a drunken driver. However, driving when drunk is against the law but driving when exhausted isn’t. As Paul Martin says, it is very ironic that we admire people who function on very little sleep instead of criticizing them for being irresponsible. Our world would be a much safer, happier place if everyone, whatever their job, slept eight hours a night.New English File Upper-intermediate by Clive Oxenden and Christina Latham-Koenig, OUPThe phrase “round the clock” in the second paragraph is similar in meaning to______.

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and choose A, B, C, or D to indicate the correct word or phrase that best fits each of the following blanks. Fill in the appropriate word in question 35Voluntary work is work that you do not get paid for and usually involves doing things to help other people, especially the elderly or the sick or working on (31)______ of a charity or similar organization. Most charitable organizations rely on unpaid volunteers, and thousands of Americans and British people give many hours of their time to doing some form of social work or organizing fund- raising events to support the work. Volunteering is especially popular in the US and the reasons this may be found in (32)______ American values such as the Protestant work ethic, the idea that work improves the person who does it, and the belief that people can change their condition if they try hard enough. In the US young people over 18 can take part in AmeriCorps, a government program that (33)______ them to work as volunteers for a period of time, with the promise of help in paying for their education later. Older Americans who do not work may spend much of their free time volunteering. In Britain a lot of voluntary work is directed towards supporting the country’s social services. The WRVS and other organizations run a meals on wheels service in many parts of Britain, provide hot meals for old people who are (34)______ to cook for themselves. The nationwide Citizens Advice Bureau, which offers free advice to the public on a wide range of issues, is run mainly by volunteers, and the Blood Transfusion Service relies on voluntary blood donors to give blood for use in hospitals. Political parties use volunteers at election time, and Churches depend on volunteers to (35) _______ building clean.

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38 Bài tập thủy phân polisaccarit

Tại một hộ gia đình, m kg một loại bột gạo nếp (chứa 80% tinh bột) được sử dụng để lên men rượu.Sau quá trình lên men, thu được 18,4 lít ancol etylic 40o. Biết hiệu suất của cả quá trình là 72% và khối lượng riêng của ancol etylic là 0,8 g/mL. Giá trị của m là

Hóa học Lớp 12
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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. Passengers are required to arrive to the gate fifteen minutes before departure time. 

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and choose A, B, C, or D to indicate the correct word or phrase that best fits each of the following blanks. Fill in the appropriate word in question 34Voluntary work is work that you do not get paid for and usually involves doing things to help other people, especially the elderly or the sick or working on (31)______ of a charity or similar organization. Most charitable organizations rely on unpaid volunteers, and thousands of Americans and British people give many hours of their time to doing some form of social work or organizing fund- raising events to support the work. Volunteering is especially popular in the US and the reasons this may be found in (32)______ American values such as the Protestant work ethic, the idea that work improves the person who does it, and the belief that people can change their condition if they try hard enough. In the US young people over 18 can take part in AmeriCorps, a government program that (33)______ them to work as volunteers for a period of time, with the promise of help in paying for their education later. Older Americans who do not work may spend much of their free time volunteering. In Britain a lot of voluntary work is directed towards supporting the country’s social services. The WRVS and other organizations run a meals on wheels service in many parts of Britain, provide hot meals for old people who are (34)______ to cook for themselves. The nationwide Citizens Advice Bureau, which offers free advice to the public on a wide range of issues, is run mainly by volunteers, and the Blood Transfusion Service relies on voluntary blood donors to give blood for use in hospitals. Political parties use volunteers at election time, and Churches depend on volunteers to (35) _______ building clean.

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and choose A, B, C, or D to indicate the correct word or phrase that best fits each of the following blanks. Fill in the appropriate word in question 33Voluntary work is work that you do not get paid for and usually involves doing things to help other people, especially the elderly or the sick or working on (31)______ of a charity or similar organization. Most charitable organizations rely on unpaid volunteers, and thousands of Americans and British people give many hours of their time to doing some form of social work or organizing fund- raising events to support the work. Volunteering is especially popular in the US and the reasons this may be found in (32)______ American values such as the Protestant work ethic, the idea that work improves the person who does it, and the belief that people can change their condition if they try hard enough. In the US young people over 18 can take part in AmeriCorps, a government program that (33)______ them to work as volunteers for a period of time, with the promise of help in paying for their education later. Older Americans who do not work may spend much of their free time volunteering. In Britain a lot of voluntary work is directed towards supporting the country’s social services. The WRVS and other organizations run a meals on wheels service in many parts of Britain, provide hot meals for old people who are (34)______ to cook for themselves. The nationwide Citizens Advice Bureau, which offers free advice to the public on a wide range of issues, is run mainly by volunteers, and the Blood Transfusion Service relies on voluntary blood donors to give blood for use in hospitals. Political parties use volunteers at election time, and Churches depend on volunteers to (35) _______ building clean.

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

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. Being that he was a good swimmer, Tom managed to rescue the child.

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and choose A, B, C, or D to indicate the correct word or phrase that best fits each of the following blanks. Fill in the appropriate word in question 32Voluntary work is work that you do not get paid for and usually involves doing things to help other people, especially the elderly or the sick or working on (31)______ of a charity or similar organization. Most charitable organizations rely on unpaid volunteers, and thousands of Americans and British people give many hours of their time to doing some form of social work or organizing fund- raising events to support the work. Volunteering is especially popular in the US and the reasons this may be found in (32)______ American values such as the Protestant work ethic, the idea that work improves the person who does it, and the belief that people can change their condition if they try hard enough. In the US young people over 18 can take part in AmeriCorps, a government program that (33)______ them to work as volunteers for a period of time, with the promise of help in paying for their education later. Older Americans who do not work may spend much of their free time volunteering. In Britain a lot of voluntary work is directed towards supporting the country’s social services. The WRVS and other organizations run a meals on wheels service in many parts of Britain, provide hot meals for old people who are (34)______ to cook for themselves. The nationwide Citizens Advice Bureau, which offers free advice to the public on a wide range of issues, is run mainly by volunteers, and the Blood Transfusion Service relies on voluntary blood donors to give blood for use in hospitals. Political parties use volunteers at election time, and Churches depend on volunteers to (35) _______ building clean.

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Chương II. ĐỘNG LỰC HỌC CHẤT ĐIỂM (P1)

Hai lực đồng quy F1  và F2  hợp với nhau một góc α , hợp lực của hai lực này có độ lớn là

Vật lý Lớp 10
Xem chi tiết 1.9 K lượt xem 5 năm trước
38 Bài tập thủy phân polisaccarit

Tính khối lượng gạo chứa 80% tinh bột cần dùng để điều chế được 10 lít rượu 46o (khối lượng riêng của rượu nguyên chất là 0,8 g/ml), biết hiệu suất toàn bộ quá trình điều chế là 50%.

Hóa học Lớp 12
Xem chi tiết 39.1 K lượt xem 5 năm trước
20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.In order no money would be wasted, we had to account for every penny we spent 

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Read the following passage and choose A, B, C, or D to indicate the correct word or phrase that best fits each of the following blanks. Fill in the appropriate word in question 31Voluntary work is work that you do not get paid for and usually involves doing things to help other people, especially the elderly or the sick or working on (31)______ of a charity or similar organization. Most charitable organizations rely on unpaid volunteers, and thousands of Americans and British people give many hours of their time to doing some form of social work or organizing fund- raising events to support the work. Volunteering is especially popular in the US and the reasons this may be found in (32)______ American values such as the Protestant work ethic, the idea that work improves the person who does it, and the belief that people can change their condition if they try hard enough. In the US young people over 18 can take part in AmeriCorps, a government program that (33)______ them to work as volunteers for a period of time, with the promise of help in paying for their education later. Older Americans who do not work may spend much of their free time volunteering. In Britain a lot of voluntary work is directed towards supporting the country’s social services. The WRVS and other organizations run a meals on wheels service in many parts of Britain, provide hot meals for old people who are (34)______ to cook for themselves. The nationwide Citizens Advice Bureau, which offers free advice to the public on a wide range of issues, is run mainly by volunteers, and the Blood Transfusion Service relies on voluntary blood donors to give blood for use in hospitals. Political parties use volunteers at election time, and Churches depend on volunteers to (35) _______ building clean.

Tiếng Anh Tốt nghiệp THPT
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.There were over two hundred people at Carl's trial, most of whom believed that he was not guilty of the crime.

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

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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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.There is an important difference between humans and chimpanzees. Chimpanzees walk on four legs.

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38 Bài tập thủy phân polisaccarit

Lên men rượu a (kg) tinh bột thu được 10 lít ancol etylic 46o. Biết hiệu suất chung của quá trình là 80%, dC2H5OH = 0,8 g/mL . Giá trị nào sau đây gần nhất với a?

Hóa học Lớp 12
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20 Đề ôn thi Tiếng Anh chuẩn cấu trúc có lời giải chi tiết (Đề số 07)

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.

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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.This material is suitable for students of eighteen years and up.

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

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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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 22)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.Members are reminded that they are responsible for any damage caused by their guests.

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Tổng hợp bài tập hay và khó có lời giải chi tiết môn Hóa Học (P1)

X là một este đơn chức, mạch hở, không có phản ứng tráng gương. Đốt cháy hoàn toàn 0,1 mol X rồi cho sản phẩm cháy hấp thụ hoàn toàn vào dung dịch  chứa 16,28 gam Ca(OH)2, thu được m gam kết tủa đồng thời dung dịch Ca(OH)2­tăng lên 19 gam. Thủy phân X bằng dung dịch NaOH thu được hai chất hữu cơ có số nguyên tử cacbon trong phân tử bằng nhau. Phần trăm khối lượng của oxi trong phân tử X là?

Hóa học Lớp 12
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38 Bài tập thủy phân polisaccarit

Từ m kg gạo (chứa 75% khối lượng tinh bột) thực hiện quá trình lên men rượu với hiệu suất chung là 80%, thu được 10 lít rượu 46o. Biết khối lượng riêng của rượu là 0,8 g/mL. Giá trị của m là

Hóa học Lớp 12
Xem chi tiết 14.6 K lượt xem 5 năm trước
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