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Giải hộ tớ với các bạn iu :< Did you know that you do not have to be a chemist to invent something? An example of chemistry invention that was made by a non-scientist is Liquid Paper. In 1952, a divorced woman named Bette Nesmith Graham needed to work to support herself and her son. Life was very difficult for a single mother. [1] She soon found a job as a typist, but she was not very good at it. [2] She made a lot of errors typing leading her to formulate a white tempura paint to...
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Giải hộ tớ với các bạn iu :<

Did you know that you do not have to be a chemist to invent something? An example of chemistry invention that was made by a non-scientist is Liquid Paper. In 1952, a divorced woman named Bette Nesmith Graham needed to work to support herself and her son. Life was very difficult for a single mother. [1] She soon found a job as a typist, but she was not very good at it. [2] She made a lot of errors typing leading her to formulate a white tempura paint to hide them. [3] Using her kitchen as a laboratory, she developed a liquid that other people wanted to buy and use. She named this liquid “Mistake Out” [4]

While continuing to work as a secretary, she educated herself in business methods, promotion, and research until she was satisfied that the product she had developed was really worthwhile. Sometimes around 1952 she offered “Mistake Out” to IBM, which turned it down. From 1952 until 1979 she continued to make and sell “Mistake Out”, now renamed “Liquid Paper”, out of her home. In 1979, the Gillette Corporation bought “Liquid Paper” for $47.5 million dollars plus royalties.

Question 36: Which of the following is the best title for this passage?

A. The Life of Bette Nesmith Graham B. The Process of Manufacturing “Liquid Paper”

C. How an Ordinary Person Became an Inventor D. The Importance of Science Education

Question 37: The author probably started this passage with a question in order to____.

A. catch the reader‟s attention

B. raise an objection against a non-scientist‟s invention

C. express curiosity about the history of invention

D. none of the above

Question 38:The word „formulate’ in bold in the first paragraph is closest in meaning to____.

A. use B. think about C. make D. correct

Question 39: What did Graham do at the same time that she educated herself in business?

A. She made and sold “Liquid Paper” B. She worked as a consultant for IBM

C. She worked as a secretary D. She continued inventing new products.

Question 40: What can be inferred abut Graham?

A. She was uninterested in science B. She was very determined to succeed

C. She was not ambitious D. She was a scientific genius.

Question 41:The word ‘it’ in bold in the second paragraph refers to___.

A. IBM B. „Mistake Out‟ C. research D. none of above

2
11 tháng 1 2020

Did you know that you do not have to be a chemist to invent something? An example of chemistry invention that was made by a non-scientist is Liquid Paper. In 1952, a divorced woman named Bette Nesmith Graham needed to work to support herself and her son. Life was very difficult for a single mother. [1] She soon found a job as a typist, but she was not very good at it. [2] She made a lot of errors typing leading her to formulate a white tempura paint to hide them. [3] Using her kitchen as a laboratory, she developed a liquid that other people wanted to buy and use. She named this liquid “Mistake Out” [4]

While continuing to work as a secretary, she educated herself in business methods, promotion, and research until she was satisfied that the product she had developed was really worthwhile. Sometimes around 1952 she offered “Mistake Out” to IBM, which turned it down. From 1952 until 1979 she continued to make and sell “Mistake Out”, now renamed “Liquid Paper”, out of her home. In 1979, the Gillette Corporation bought “Liquid Paper” for $47.5 million dollars plus royalties.

Question 36: Which of the following is the best title for this passage?

A. The Life of Bette Nesmith Graham B. The Process of Manufacturing “Liquid Paper”

C. How an Ordinary Person Became an Inventor D. The Importance of Science Education

Question 37: The author probably started this passage with a question in order to____.

A. catch the reader‟s attention

B. raise an objection against a non-scientist‟s invention

C. express curiosity about the history of invention

D. none of the above

Question 38:The word „formulate’ in bold in the first paragraph is closest in meaning to____.

A. use B. think about C. make D. correct

Question 39: What did Graham do at the same time that she educated herself in business?

A. She made and sold “Liquid Paper” B. She worked as a consultant for IBM

C. She worked as a secretary D. She continued inventing new products.

Question 40: What can be inferred abut Graham?

A. She was uninterested in science B. She was very determined to succeed

C. She was not ambitious D. She was a scientific genius.

Question 41:The word ‘it’ in bold in the second paragraph refers to___.

A. IBM B. „Mistake Out‟ C. research D. none of above

11 tháng 1 2020

Did you know that you do not have to be a chemist to invent something? An example of chemistry invention that was made by a non-scientist is Liquid Paper. In 1952, a divorced woman named Bette Nesmith Graham needed to work to support herself and her son. Life was very difficult for a single mother. [1] She soon found a job as a typist, but she was not very good at it. [2] She made a lot of errors typing leading her to formulate a white tempura paint to hide them. [3] Using her kitchen as a laboratory, she developed a liquid that other people wanted to buy and use. She named this liquid “Mistake Out” [4]

While continuing to work as a secretary, she educated herself in business methods, promotion, and research until she was satisfied that the product she had developed was really worthwhile. Sometimes around 1952 she offered “Mistake Out” to IBM, which turned it down. From 1952 until 1979 she continued to make and sell “Mistake Out”, now renamed “Liquid Paper”, out of her home. In 1979, the Gillette Corporation bought “Liquid Paper” for $47.5 million dollars plus royalties.

Question 36: Which of the following is the best title for this passage?

A. The Life of Bette Nesmith Graham B. The Process of Manufacturing “Liquid Paper”

C. How an Ordinary Person Became an Inventor D. The Importance of Science Education

Question 37: The author probably started this passage with a question in order to____.

A. catch the reader‟s attention

B. raise an objection against a non-scientist‟s invention

C. express curiosity about the history of invention

D. none of the above

Question 38:The word „formulate’ in bold in the first paragraph is closest in meaning to____.

A. use B. think about C. make D. correct

Question 39: What did Graham do at the same time that she educated herself in business?

A. She made and sold “Liquid Paper” B. She worked as a consultant for IBM

C. She worked as a secretary D. She continued inventing new products.

Question 40: What can be inferred abut Graham?

A. She was uninterested in science B. She was very determined to succeed

C. She was not ambitious D. She was a scientific genius.

Question 41:The word ‘it’ in bold in the second paragraph refers to___.

A. IBM B. „Mistake Out‟ C. research D. none of above

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. A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca – Cola, the world – famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

The author uses Alexander Fleming as an example of ________.

A. a person who made an accidental scientific discovery 

B. one of the most famous inventors in history 

C. someone who became a millionaire from his invention 

D. a man who dedicated his life to medical science

1
30 tháng 8 2017

 

Chọn A

    Tác giả sử dụng Alexander Fleming làm ví dụ của ________.

    A. một người đã thực hiện một khám phá khoa học tình cờ

    B. một trong những nhà phát minh nổi tiếng nhất trong lịch sử

    C. một người trở thành triệu phú từ phát minh của mình

    D. một người đàn ông đã cống hiến cuộc đời mình cho khoa học y khoa

    Dẫn chứng: Scientists have also made crucial discoveries by accident when they were conducting experiments.      

    Tạm dịch: Các nhà khoa học cũng đã có những khám phá quan trọng một cách tình cờ khi họ đang tiến hành thí nghiệm.

ð Đáp án A

 

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.A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca -Cola, the world - famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

The author uses Alexander Fleming as an example of ________.

A. a person who made an accidental scientific discovery

B. one of the most famous inventors in history

C. someone who became a millionaire from his invention

D. a man who dedicated his life to medical science

1
25 tháng 2 2018

Chọn A

Tác giả sử dụng Alexander Fleming làm ví dụ về ________.

A. một người đã khám phá công trình khoa học một cách ngẫu nhiên

B. một trong những nhà phát minh nổi tiếng nhất trong lịch sử

C. một người đã trở thành một triệu phú từ phát minh của mình

D. một người đã cống hiến cuộc đời mình cho khoa học y khoa

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.A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca -Cola, the world - famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

In paragraph 1, the word arduous is closest in meaning to _______.

A. constant

B. tough

C. specific

D. detailed

1
24 tháng 2 2017

Chọn B

Trong đoạn 1, từ “arduous” gần nghĩa _______.

A. liên tục

B. khó khăn

C. cụ thể

D. chi tiết

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. A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca – Cola, the world – famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

In paragraph 1, the word arduous is closest in meaning to _______.

A. constant

B. tough

C. specific

D. detailed

1
5 tháng 12 2017

 

Chọn B

Trong đoạn 1, từ arduous (khó nhất) có nghĩa gần nhất với

    A. constant: kiên trì

    B. tough : khó                  

    C. specific : cụ thể            

    D. detailed: chi tiết

    => Đáp án B

 

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.A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca -Cola, the world - famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

In paragraph 2, the word endeavor is closest in meaning to _______.

A. request

B. attempt

C. research

D. dream

1
1 tháng 9 2018

Chọn B

Trong đoạn 2, endeavor gần nghĩa _______.

A. yêu cầu

B. cố gắng

C. nghiên cứu

D. giấc mơ

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. A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca – Cola, the world – famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

In paragraph 2, the word endeavor is closest in meaning to _______.

A. request

B. attempt

C. research

D. dream

1
4 tháng 1 2018

Chọn B

    Ở đoạn 2, từ “endeavor” ( nỗ lực)gần nghĩa nhất với?

    A. request : yêu cầu

    B. attempt : cố gắng 

    C. research : nghiên cứu                              

    D. dream: giấc mơ

    => endeavor~ attempt : cố gắng, nỗ lực

    => Đáp án B

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34. A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident. In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca - Cola, the world - famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food: the microwave oven.

Who was John Pemberton?

A. The person who made Teflon

B. The creator of Coca-Cola

C. The man who discovered penicillin

D. The inventor of the microwave

1
28 tháng 6 2018

B

Kiến thức: đọc hiểu

Giải thích:

John Pemberton là ai?

A. Người làm Teflon                                B. Người tạo ra Coca-Cola

C. Người phát hiện ra penicillin                D. Người phát minh lò vi sóng

Dẫn  chứng:  While  he  was  not  successful  in  that  endeavor,  he  managed  to  invent  Coca  -  Cola,  the  world  - famous carbonated soft drink.

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. A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca – Cola, the world – famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

Who was John Pemberton?

A. The person who made Teflon

B. The creator of Coca–Cola 

C. The man who discovered penicillin

D. The inventor of the microwave

1
15 tháng 2 2018

Chọn B  

    John Pemberton là ai?

    A. Người làm Teflon

    B. Người tạo ra Coca-Cola

    C. Người phát hiện ra penicillin

    D. Người phát minh lò vi sóng

    Dẫn  chứng:  While  he  was  not  successful  in  that  endeavor,  he  managed  to  invent  Coca  -  Cola,  the  world  - famous carbonated soft drink.

    Tạm dịch: Trong khi anh ta không thành công trong nỗ lực đó, anh ta đã phát minh ra Coca - Cola, nước ngọt có ga nổi tiếng thế giới.

    => Đáp án B

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.A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually...
Đọc tiếp

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.

A large number of inventions require years of arduous research and development before they are perfected. For instance, Thomas Edison had to make more than 1,000 attempts to invent the incandescent light bulb before he finally succeeded. History is replete with numerous other examples of people trying, yet failing to make inventions before they eventually succeeded. Yet some inventions have come about not through hard work but simply by accident.

In most cases, when someone unintentionally invented something, the inventor was attempting to create something else. For example, in the 1930s, chemist Roy Plunkett was attempting to make a new substance that could be used to refrigerate items. He mixed some chemicals together. Then, he put them into a pressurized container and cooled the mixture. By the time his experiment was complete, he had a new invention. It was not a new substance that could be used for refrigeration though. Instead, he had invented Teflon, which is today most commonly used to make nonstick pots and pans. Similarly, decades earlier, John Pemberton was a pharmacist in Atlanta, Georgia. He was attempting to create a tonic that people could use whenever they had headaches. While he was not successful in that endeavor, he managed to invent Coca -Cola, the world - famous carbonated soft drink.

Scientists have also made crucial discoveries by accident when they were conducting experiments. In 1928, Alexander Fleming discovered penicillin, an antibiotic, in this manner. He discovered some mold growing in a dish with some bacteria. He noticed that the bacteria seemed to be avoiding the mold. When he investigated further, he determined some of the many useful properties of penicillin, which has saved millions of lives over the past few decades. Likewise, in 1946, scientist Percy Spencer was conducting an experiment with microwaves. He had a candy bar in his pocket, and he noticed that it suddenly melted. He investigated and learned the reason why that had happened. Soon afterward, he built a device that could utilize microwaves to heat food. the microwave oven.

Who was John Pemberton?

A. The person who made Teflon

B. The creator of Coca-Cola

C. The man who discovered penicillin

D. The inventor of the microwave

1
17 tháng 9 2018

Chọn B

John Pemberton là ai?

A. Người tạo ra Teflon

B. Người tạo ra Coca-Cola

C. Người phát hiện ra penicillin

D. Người phát minh ra lò vi sóng