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Câu hỏi:

17/07/2024 2,028

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.

Jonas Salk is the American physician and medical researcher who developed the first safe and effective vaccine for poliomyelitis. Salk received his M.D. in 1939 from New York University College of Medicine, where he worked with Thomas Francis Jr., who was studying how to develop vaccines from killed viruses. Salk joined Francis in 1942 at the University of Michigan School of Public Health and became part of a group that was working to develop a vaccine against influenza.

In 1947, Salk became associate professor of bacteriology and head of the Virus Research Laboratory at the University of Pittsburgh School of Medicine, where he began research on poliomyelitis. Working with scientists from other universities in a program to classify the various strains of the polio virus, Salk corroborated other studies in identifying three separate strains. He then demonstrated that killed virus of each of the three, although incapable of producing the disease, could induce antibody formation in monkeys.

In 1952, he conducted field tests of his killed-virus vaccine, first on children who had recovered from polio and then on subjects who had not had the disease. The results of both tests showed that the children’s antibody levels rose significantly and no subjects contracted polio from the vaccine. His findings were published the following year in the Journal of the American Medical Association. In 1954, a mass field trial was held, and the vaccine, injected by needle, was found to safely reduce the incidence of polio. On April 12,1955, the vaccine was released for use in the United States. Salk served successively as professor of bacteriology, preventive medicine, and experimental medicine at Pittsburgh, and in 1963, he became fellow and director of the Institute for Biological Studies in San Diego, California, later called the Salk Institute. Among many other honors, he was awarded the Presidential Medal of Freedom in 1977.

What is the main idea of the passage?

A. How Jonas Salk trained to be a physician and medical researcher

B. How the medical research of Jonas Salk led to the development of the polio vaccine

Đáp án chính xác

C. How Salk and his colleagues learned to kill viruses

D .How Salk was promoted to important positions at the University of Pennsylvania

Trả lời:

verified Giải bởi Vietjack

Đáp án B

Ý chính của bài đọc là gì?

A. Jonas Salk được đào tạo để trở thành một bác sĩ và nhà nghiên cứu y học như thế nào

B. Nghiên cứu y học của Jonas Salk đã dẫn đến sự phát triển của vắc xin bại liệt như thế nào

C. Salk và các đồng nghiệp của anh ấy học cách tiêu diệt virus như thế nào

D. Salk được thăng chức vào các vị trí quan trọng tại Đại học Pennsylvania như thế nào

Thông tin trong bài: "Jonas Salk is the American physician and medical researcher who developed the first safe and effective vaccine for poliomyelitis." (Jonas Salk là bác sĩ và nhà nghiên cứu y học người Mỹ, người đã phát triển loại vắc-xin đầu tiên an toàn và hiệu quả cho bệnh bại liệt.)

- "In 1947, Salk became associate professor of bacteriology and head of the Virus Research Laboratory at the University of Pittsburgh School of Medicine, where he began research on poliomyelitis." (Năm 1947, Salk trở thành phó giáo sư vi khuẩn học và là người đứng đầu Phòng thí nghiệm Nghiên cứu Virus tại Trường Đại học Y Pittsburgh, nơi ông bắt đầu nghiên cứu về bệnh bại liệt.)

- "On April 12,1955, the vaccine was released for use in the United States." (Vào ngày 12 tháng 4 năm 1955, vắc-xin đã được được đưa vào sử dụng tại Mỹ.)

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CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

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.

Jonas Salk is the American physician and medical researcher who developed the first safe and effective vaccine for poliomyelitis. Salk received his M.D. in 1939 from New York University College of Medicine, where he worked with Thomas Francis Jr., who was studying how to develop vaccines from killed viruses. Salk joined Francis in 1942 at the University of Michigan School of Public Health and became part of a group that was working to develop a vaccine against influenza.

In 1947, Salk became associate professor of bacteriology and head of the Virus Research Laboratory at the University of Pittsburgh School of Medicine, where he began research on poliomyelitis. Working with scientists from other universities in a program to classify the various strains of the polio virus, Salk corroborated other studies in identifying three separate strains. He then demonstrated that killed virus of each of the three, although incapable of producing the disease, could induce antibody formation in monkeys.

In 1952, he conducted field tests of his killed-virus vaccine, first on children who had recovered from polio and then on subjects who had not had the disease. The results of both tests showed that the children’s antibody levels rose significantly and no subjects contracted polio from the vaccine. His findings were published the following year in the Journal of the American Medical Association. In 1954, a mass field trial was held, and the vaccine, injected by needle, was found to safely reduce the incidence of polio. On April 12,1955, the vaccine was released for use in the United States. Salk served successively as professor of bacteriology, preventive medicine, and experimental medicine at Pittsburgh, and in 1963, he became fellow and director of the Institute for Biological Studies in San Diego, California, later called the Salk Institute. Among many other honors, he was awarded the Presidential Medal of Freedom in 1977

Which word is closest in meaning to the word "corroborated" as used in line 10 of the passage?

Xem đáp án » 21/06/2022 767

Câu 2:

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 31 to 35.

Banking and banks are very important for the functioning of the modern world. Without banks the way we use money would not work. Banks enable people to save money, borrow money and to pay for things with ease and security.

Each country in the world has its own well known banks that have branches in nearly every city so that they are convenient for people to use. People often have to visit the local branch of the bank when they want certain services. There are also some very big multinational banks that have branches in most countries in the world.

As well as the local branches that are in most cities, each bank will also have a head office. This is where all central tasks are performed that let the local branches function. The people that work in the branches will be the bank manager, the person in charge, and various tellers who work behind the bank counter and help the customers. There will also likely be security guards to protect the money, workers and customers. 

Most customers will just need to see the tellers when they qo to the bank if they are payinq money into their account as either cash or a check. However, they might need to see the bank manager if they want to open an account or if they have become overdraw, when they have spent more money than there was in the account. Also if they want to borrow money and get a loan the person will need to see the bank manager who will have to approve it.

As well as being able to use cash or checks to pay for things, banks also offer their customers the more convenient methods of using either a debit card or credit card. These methods are very convenient as you just need to carry a small plastic card to be able to pay for anything. When paying with plastic you will need to either sign a receipt or enter a PIN number to conform the purchase and that you are authorized to use the card.

Which of the following methods is more convenient when paying for something than using a check?

Xem đáp án » 21/06/2022 576

Câu 3:

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 26 to 30.

Instant messaging enables you to get (26) ____________touch with somebody immediately and talk in real time to that person in a (27) ____________artificial while seemingly urgent way. Instant messaging discourages self-censoring, voice clues, or reality-based feedback loop. If you're angry with one another (or even if you're not), you may end (28) ____________typing something that you might not have said if you had a little longer to think it through. Although you do get an instant response, it's not the same as a conversation, so things like tone, (29) ____________ of humour, body language, and irony really do get (30) ____________in typing. No matter how you cut it, communicating through the Internet really is simply typing. Chat rooms are another part of the fantasy world of the Internet. They've been known to be very disruptive to relationships even when they're not suggestive or pornographic, and when they are

Xem đáp án » 21/06/2022 529

Câu 4:

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 31 to 35.

Banking and banks are very important for the functioning of the modern world. Without banks the way we use money would not work. Banks enable people to save money, borrow money and to pay for things with ease and security.

Each country in the world has its own well known banks that have branches in nearly every city so that they are convenient for people to use. People often have to visit the local branch of the bank when they want certain services. There are also some very big multinational banks that have branches in most countries in the world.

As well as the local branches that are in most cities, each bank will also have a head office. This is where all central tasks are performed that let the local branches function. The people that work in the branches will be the bank manager, the person in charge, and various tellers who work behind the bank counter and help the customers. There will also likely be security guards to protect the money, workers and customers. 

Most customers will just need to see the tellers when they qo to the bank if they are payinq money into their account as either cash or a check. However, they might need to see the bank manager if they want to open an account or if they have become overdraw, when they have spent more money than there was in the account. Also if they want to borrow money and get a loan the person will need to see the bank manager who will have to approve it.

As well as being able to use cash or checks to pay for things, banks also offer their customers the more convenient methods of using either a debit card or credit card. These methods are very convenient as you just need to carry a small plastic card to be able to pay for anything. When paying with plastic you will need to either sign a receipt or enter a PIN number to conform the purchase and that you are authorized to use the card

What do bank tellers do?

Xem đáp án » 21/06/2022 475

Câu 5:

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 31 to 35.

Banking and banks are very important for the functioning of the modern world. Without banks the way we use money would not work. Banks enable people to save money, borrow money and to pay for things with ease and security.

Each country in the world has its own well known banks that have branches in nearly every city so that they are convenient for people to use. People often have to visit the local branch of the bank when they want certain services. There are also some very big multinational banks that have branches in most countries in the world.

As well as the local branches that are in most cities, each bank will also have a head office. This is where all central tasks are performed that let the local branches function. The people that work in the branches will be the bank manager, the person in charge, and various tellers who work behind the bank counter and help the customers. There will also likely be security guards to protect the money, workers and customers. 

Most customers will just need to see the tellers when they qo to the bank if they are payinq money into their account as either cash or a check. However, they might need to see the bank manager if they want to open an account or if they have become overdraw, when they have spent more money than there was in the account. Also if they want to borrow money and get a loan the person will need to see the bank manager who will have to approve it.

As well as being able to use cash or checks to pay for things, banks also offer their customers the more convenient methods of using either a debit card or credit card. These methods are very convenient as you just need to carry a small plastic card to be able to pay for anything. When paying with plastic you will need to either sign a receipt or enter a PIN number to conform the purchase and that you are authorized to use the card

What happens when a bank customer spends more money than they have in their account?

Xem đáp án » 21/06/2022 358

Câu 6:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

My mother has____________for a bargain

Xem đáp án » 21/06/2022 259

Câu 7:

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 26 to 30.

Instant messaging enables you to get (26) ____________touch with somebody immediately and talk in real time to that person in a (27) ____________artificial while seemingly urgent way. Instant messaging discourages self-censoring, voice clues, or reality-based feedback loop. If you're angry with one another (or even if you're not), you may end (28) ____________typing something that you might not have said if you had a little longer to think it through. Although you do get an instant response, it's not the same as a conversation, so things like tone, (29) ____________ of humour, body language, and irony really do get (30) ____________in typing. No matter how you cut it, communicating through the Internet really is simply typing. Chat rooms are another part of the fantasy world of the Internet. They've been known to be very disruptive to relationships even when they're not suggestive or pornographic, and when they are

Xem đáp án » 21/06/2022 238

Câu 8:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35.

Banking and banks are very important for the functioning of the modern world. Without banks the way we use money would not work. Banks enable people to save money, borrow money and to pay for things with ease and security.

Each country in the world has its own well known banks that have branches in nearly every city so that they are convenient for people to use. People often have to visit the local branch of the bank when they want certain services. There are also some very big multinational banks that have branches in most countries in the world.

As well as the local branches that are in most cities, each bank will also have a head office. This is where all central tasks are performed that let the local branches function. The people that work in the branches will be the bank manager, the person in charge, and various tellers who work behind the bank counter and help the customers. There will also likely be security guards to protect the money, workers and customers. 

Most customers will just need to see the tellers when they qo to the bank if they are payinq money into their account as either cash or a check. However, they might need to see the bank manager if they want to open an account or if they have become overdraw, when they have spent more money than there was in the account. Also if they want to borrow money and get a loan the person will need to see the bank manager who will have to approve it.

As well as being able to use cash or checks to pay for things, banks also offer their customers the more convenient methods of using either a debit card or credit card. These methods are very convenient as you just need to carry a small plastic card to be able to pay for anything. When paying with plastic you will need to either sign a receipt or enter a PIN number to conform the purchase and that you are authorized to use the card

What is the purpose of the head office of a bank?

Xem đáp án » 21/06/2022 208

Câu 9:

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 31 to 35.

Banking and banks are very important for the functioning of the modern world. Without banks the way we use money would not work. Banks enable people to save money, borrow money and to pay for things with ease and security.

Each country in the world has its own well known banks that have branches in nearly every city so that they are convenient for people to use. People often have to visit the local branch of the bank when they want certain services. There are also some very big multinational banks that have branches in most countries in the world.

As well as the local branches that are in most cities, each bank will also have a head office. This is where all central tasks are performed that let the local branches function. The people that work in the branches will be the bank manager, the person in charge, and various tellers who work behind the bank counter and help the customers. There will also likely be security guards to protect the money, workers and customers. 

Most customers will just need to see the tellers when they qo to the bank if they are payinq money into their account as either cash or a check. However, they might need to see the bank manager if they want to open an account or if they have become overdraw, when they have spent more money than there was in the account. Also if they want to borrow money and get a loan the person will need to see the bank manager who will have to approve it.

As well as being able to use cash or checks to pay for things, banks also offer their customers the more convenient methods of using either a debit card or credit card. These methods are very convenient as you just need to carry a small plastic card to be able to pay for anything. When paying with plastic you will need to either sign a receipt or enter a PIN number to conform the purchase and that you are authorized to use the card

According to the passage, what do banks enable people to do?

Xem đáp án » 21/06/2022 202

Câu 10:

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

Xem đáp án » 21/06/2022 199

Câu 11:

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

Xem đáp án » 21/06/2022 196

Câu 12:

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 26 to 30.

Instant messaging enables you to get (26) ____________touch with somebody immediately and talk in real time to that person in a (27) ____________artificial while seemingly urgent way. Instant messaging discourages self-censoring, voice clues, or reality-based feedback loop. If you're angry with one another (or even if you're not), you may end (28) ____________typing something that you might not have said if you had a little longer to think it through. Although you do get an instant response, it's not the same as a conversation, so things like tone, (29) ____________ of humour, body language, and irony really do get (30) ____________in typing. No matter how you cut it, communicating through the Internet really is simply typing. Chat rooms are another part of the fantasy world of the Internet. They've been known to be very disruptive to relationships even when they're not suggestive or pornographic, and when they are

Xem đáp án » 21/06/2022 196

Câu 13:

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 26 to 30.

Instant messaging enables you to get (26) ____________touch with somebody immediately and talk in real time to that person in a (27) ____________artificial while seemingly urgent way. Instant messaging discourages self-censoring, voice clues, or reality-based feedback loop. If you're angry with one another (or even if you're not), you may end (28) ____________typing something that you might not have said if you had a little longer to think it through. Although you do get an instant response, it's not the same as a conversation, so things like tone, (29) ____________ of humour, body language, and irony really do get (30) ____________in typing. No matter how you cut it, communicating through the Internet really is simply typing. Chat rooms are another part of the fantasy world of the Internet. They've been known to be very disruptive to relationships even when they're not suggestive or pornographic, and when they are

Xem đáp án » 21/06/2022 194

Câu 14:

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 26 to 30.

Instant messaging enables you to get (26) ____________touch with somebody immediately and talk in real time to that person in a (27) ____________artificial while seemingly urgent way. Instant messaging discourages self-censoring, voice clues, or reality-based feedback loop. If you're angry with one another (or even if you're not), you may end (28) ____________typing something that you might not have said if you had a little longer to think it through. Although you do get an instant response, it's not the same as a conversation, so things like tone, (29) ____________ of humour, body language, and irony really do get (30) ____________in typing. No matter how you cut it, communicating through the Internet really is simply typing. Chat rooms are another part of the fantasy world of the Internet. They've been known to be very disruptive to relationships even when they're not suggestive or pornographic, and when they are

Xem đáp án » 21/06/2022 179

Câu 15:

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions

We should husband our resources to make sure we can make it through these hard times

Xem đáp án » 21/06/2022 178

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