Cho 1,6g CuO tác dụng với 11,76g dung dịch H2SO4 có nồng độ 25%. Xác định nồng độ % của các chất thu được trong dung dịch sau phản ứng.

Không thực hiện phép tính hãy so sánh: 

a)  ( − 225 ) . ( − 336 ) với 0

b)  ( − 112 ) .2. ( − 26 ) . ( − 321 ) với 0

Dự đoán giá trị của số nguyên x trong dẳng thức dưới đây và kiểm tra xem có đúng không:

a) (-5). x = 15

b) x . (-8) = - 56

c) 6. x = -42

d) x .(-9) = 54

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

A. houses

B. services

C. passages

D. techniques

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 3 to 7.

Back in the 1960s and 1970s, the world was becoming more aware of the destructive effects of industry (3)_____ the environment and people were starting to think seriously about ways of protecting the environment. One man who was particularly affected by this subject was Gerard Morgan-Grenville. As Morgan-Grenville travelled round earning his living as a gardener, he noticed signs of the damage that was being done to the countryside around him. It wasn't long before Morgan-Grenville decided that he had to do something about this situation. He felt that if people could be shown a better way of living then maybe they would be interested enough to try to protect their (4)_____ environment.

Mr. Morgan-Grenville decided to set up a project (5) ______ would prove what was happening to our surroundings and what could be done about it. So, in 1975, Morgan-Grenville created the Centre for Alternative Technology (CAT) in a village in Wales.

The main aim of CAT is to search for an ecologically better way of living by using technology which (6) _____ no harm to the environment. One of the most important things CAT did initially was to explore and demonstrate a wide range of techniques and to point out which ones had the least destructive results on the world around us. (7)____, CAT provides information and advice to people all over Britain and all over the world. If more and more individuals are informed about how much damage our modern lifestyle is causing to the planet, maybe more of them would be prepared to look for practical solutions to environmental problems.

Điền vào ô 7.

A. Therefore

B. However

C. Moreover

D. Although 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 3 to 7.

Back in the 1960s and 1970s, the world was becoming more aware of the destructive effects of industry (3)_____ the environment and people were starting to think seriously about ways of protecting the environment. One man who was particularly affected by this subject was Gerard Morgan-Grenville. As Morgan-Grenville travelled round earning his living as a gardener, he noticed signs of the damage that was being done to the countryside around him. It wasn't long before Morgan-Grenville decided that he had to do something about this situation. He felt that if people could be shown a better way of living then maybe they would be interested enough to try to protect their (4)_____ environment.

Mr. Morgan-Grenville decided to set up a project (5) ______ would prove what was happening to our surroundings and what could be done about it. So, in 1975, Morgan-Grenville created the Centre for Alternative Technology (CAT) in a village in Wales.

The main aim of CAT is to search for an ecologically better way of living by using technology which (6) _____ no harm to the environment. One of the most important things CAT did initially was to explore and demonstrate a wide range of techniques and to point out which ones had the least destructive results on the world around us. (7)____, CAT provides information and advice to people all over Britain and all over the world. If more and more individuals are informed about how much damage our modern lifestyle is causing to the planet, maybe more of them would be prepared to look for practical solutions to environmental problems.

Điền vào ô 4.

A. worthless

B. valueless

C. precious

D. priceless

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 43 to 50.

          It is commonly believed in the United States that school is where people go to get an education. Nevertheless, it has been said that today children interrupt their education to go to school. The distinction between schooling and education implied by this remark is important

          Education is much more open-ended and all-inclusive than schooling. Education knows no bounds. It can take place anywhere, whether in the shower or on the job, whether in a kitchen or on a tractor. It includes both the formal learning that takes place in schools and the whole universe of informal learning. The agents of education can range from a revered grandparent to the people debating politics on the radio, from a child to a distinguished scientist.Whereas schooling has a certain predictability, education quite often produces surprises. A chance conversation with a stranger may lead a person to discover how little is known of other religions. People are engaged in education in infancy. Education, then, is a very broad, inclusive term. It is a lifelong process, a process that starts long before the start of school, and one that should be an integral part of one's entire life.

          Schooling, on the other hand, is a specific, formalized process, whose general pattern varies little from one setting to the next. Throughout a country, children arrive at school at approximately the same time, take assigned seats, are taught by an adult, use similar textbooks, do homework, take exams, and so on. The slices of reality that are to be learned, whether they are the alphabet or an understanding of the workings of government, have usually been limited by the boundaries of the subjects being taught. For example, high school students know that they are not likely to find out in their classes the truth about political problems in their communities or what the newest filmmakers are experimenting with. There are definite conditions surrounding the formalized process of schooling.

The word “they”. in paragraph 3 refers______.

A. slices of reality

B. similar textbooks

C. boundaries

D. seats

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 43 to 50.

          It is commonly believed in the United States that school is where people go to get an education. Nevertheless, it has been said that today children interrupt their education to go to school. The distinction between schooling and education implied by this remark is important

          Education is much more open-ended and all-inclusive than schooling. Education knows no bounds. It can take place anywhere, whether in the shower or on the job, whether in a kitchen or on a tractor. It includes both the formal learning that takes place in schools and the whole universe of informal learning. The agents of education can range from a revered grandparent to the people debating politics on the radio, from a child to a distinguished scientist.Whereas schooling has a certain predictability, education quite often produces surprises. A chance conversation with a stranger may lead a person to discover how little is known of other religions. People are engaged in education in infancy. Education, then, is a very broad, inclusive term. It is a lifelong process, a process that starts long before the start of school, and one that should be an integral part of one's entire life.

          Schooling, on the other hand, is a specific, formalized process, whose general pattern varies little from one setting to the next. Throughout a country, children arrive at school at approximately the same time, take assigned seats, are taught by an adult, use similar textbooks, do homework, take exams, and so on. The slices of reality that are to be learned, whether they are the alphabet or an understanding of the workings of government, have usually been limited by the boundaries of the subjects being taught. For example, high school students know that they are not likely to find out in their classes the truth about political problems in their communities or what the newest filmmakers are experimenting with. There are definite conditions surrounding the formalized process of schooling.

The word “chance” in paragraph 2 is closest in meaning to______.

A. unexpected

B. usual

C. passive

D. lively

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 43 to 50.

          It is commonly believed in the United States that school is where people go to get an education. Nevertheless, it has been said that today children interrupt their education to go to school. The distinction between schooling and education implied by this remark is important

          Education is much more open-ended and all-inclusive than schooling. Education knows no bounds. It can take place anywhere, whether in the shower or on the job, whether in a kitchen or on a tractor. It includes both the formal learning that takes place in schools and the whole universe of informal learning. The agents of education can range from a revered grandparent to the people debating politics on the radio, from a child to a distinguished scientist.Whereas schooling has a certain predictability, education quite often produces surprises. A chance conversation with a stranger may lead a person to discover how little is known of other religions. People are engaged in education in infancy. Education, then, is a very broad, inclusive term. It is a lifelong process, a process that starts long before the start of school, and one that should be an integral part of one's entire life.

          Schooling, on the other hand, is a specific, formalized process, whose general pattern varies little from one setting to the next. Throughout a country, children arrive at school at approximately the same time, take assigned seats, are taught by an adult, use similar textbooks, do homework, take exams, and so on. The slices of reality that are to be learned, whether they are the alphabet or an understanding of the workings of government, have usually been limited by the boundaries of the subjects being taught. For example, high school students know that they are not likely to find out in their classes the truth about political problems in their communities or what the newest filmmakers are experimenting with. There are definite conditions surrounding the formalized process of schooling.

What does the author probably mean by using the expression “children interrupt their education to go to school” in paragraph 1?

A. Going to several different schools is educationally beneficial.

B. School vacations interrupt the continuity of the school year.

C. Summer school makes the school year too long.

D. All of people's life is an education.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 43 to 50.

          It is commonly believed in the United States that school is where people go to get an education. Nevertheless, it has been said that today children interrupt their education to go to school. The distinction between schooling and education implied by this remark is important

          Education is much more open-ended and all-inclusive than schooling. Education knows no bounds. It can take place anywhere, whether in the shower or on the job, whether in a kitchen or on a tractor. It includes both the formal learning that takes place in schools and the whole universe of informal learning. The agents of education can range from a revered grandparent to the people debating politics on the radio, from a child to a distinguished scientist.Whereas schooling has a certain predictability, education quite often produces surprises. A chance conversation with a stranger may lead a person to discover how little is known of other religions. People are engaged in education in infancy. Education, then, is a very broad, inclusive term. It is a lifelong process, a process that starts long before the start of school, and one that should be an integral part of one's entire life.

          Schooling, on the other hand, is a specific, formalized process, whose general pattern varies little from one setting to the next. Throughout a country, children arrive at school at approximately the same time, take assigned seats, are taught by an adult, use similar textbooks, do homework, take exams, and so on. The slices of reality that are to be learned, whether they are the alphabet or an understanding of the workings of government, have usually been limited by the boundaries of the subjects being taught. For example, high school students know that they are not likely to find out in their classes the truth about political problems in their communities or what the newest filmmakers are experimenting with. There are definite conditions surrounding the formalized process of schooling.

What is the main idea of the passage?

A. The best school teach a wide variety of subject.

B. Education and schooling are quite different experiences.  

C. Students benefit from schools, which require long hours and homework.

D. The more years students go to school, the better their education is.