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Câu hỏi:

18/06/2021 132

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.

Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a travelling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High- tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often

 

The changes possibly caused by the cell phones are mainly concerned with

A. the mobility of the mind and the body

B. the arteries of the brain

C. the smallest units of the brain

Đáp án chính xác

D. the resident memory

Trả lời:

verified Giải bởi Vietjack

Đáp án C

Việc biến đổi có thể bị gây nên do điện thoại di động chủ yếu liên quan tới:

A. Tính linh hoạt của trí óc và thể chất

B. Các động mạch của não

C. Những tế bào nhỏ trong não

D. Bộ nhớ cư trú

Dẫn chứng câu đầu đoạn 3 “On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones”.-(Mặt khác, những nghiên cứu y khoa chỉ ra rằng có những thay đổi trên những tế bào não của 1 vài người sử dụng di động)

Câu trả lời này có hữu ích không?

0

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

Points will be added to the Entrance Examination scores for those who hold an excellent high school__________

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Câu 2:

_______ yet?

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Câu 3:

Before I___________for that job, I_________________my parents for advice.

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Câu 4:

Read the passage and choose the best answers.

Never say anything negative about past experiences, employers, or courses or professors. Always think of something positive about an experience and talk about that. You should also be __(38) __. If you are genuinely interested __(39) __ the job, let the interviewer know that.

One of the best ways to show you are keen on a job is to demonstrate that you have researched the organization prior to the interview. You can also __(40) __ interest by asking questions about the job, the organization, and its services and products. The best way to impress an employer is to ask questions that build your interview discussion. This shows you are interested and __(41) __ close attention to the interviewer. It is a good idea to prepare a few questions in advance, but an insightful comment based on your conversation can make an even stronger statement. At the __(42) __ of the interview, it is appropriate for you to ask when you may expect to hear from the employer.

Điền vào ô số 38

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Câu 5:

Choose the word with different pronunciation of the underlined part.

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Câu 6:

Sometimes she does not agree ___ her husband about child rearing but they soon find the solutions

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Câu 7:

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.

Most people think that lions only come from Africa. This is understandable because in fact most lions do come from there but this has not always been the case. If we went back ten thousand years, we would find that there were lions roaming vast sections of the globe. However now, unfortunately only a very small section of the lion's former habitat remains.

Asiatic lions are sub-species of African lions. It is almost a hundred thousand years since the Asiatic lions split off and developed as a sub-species. At one time the Asiatic lion was living as far west as Greece and they were found from there, but in a band that spreads east through various countries of the Middle East, all the way to India. In museums now, you can see Greek coins that have clear images of the Asiatic lion on them. Most of them are dated at around 500 B.C. However, Europe saw its last Asiatic lions roaming free two thousand years ago. Over the next nineteen hundred years the numbers of Asiatic lions in the other areas declined steadily, but it was only in the nineteenth century that they disappeared from everywhere but in India.

The Gir Wildlife Sanctuary in India was established especially to protect the Asiatic lion. There are now around three hundred Asiatic lions in India and almost all of them are in this sanctuary. However, despite living in a sanctuary, which makes them safe from hunters, they still face a number of problems that threaten their survival. One of these is the ever-present danger of disease. This is what killed more than a third of Africa’s Serengeti lions in 1994, and people are fearful that something similar could happen in the Gir Sanctuary and kill off many of the Asiatic lions there.

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When you see the Asiatic lion in India, what you sense is enormous vitality. They are very impressive animals and you would never guess that they have this vulnerability when you look at them.

 

According to the passage, many people believe that lions come from _____.

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Câu 8:

Read the passage and choose the best answers.

Never say anything negative about past experiences, employers, or courses or professors. Always think of something positive about an experience and talk about that. You should also be __(38) __. If you are genuinely interested __(39) __ the job, let the interviewer know that.

One of the best ways to show you are keen on a job is to demonstrate that you have researched the organization prior to the interview. You can also __(40) __ interest by asking questions about the job, the organization, and its services and products. The best way to impress an employer is to ask questions that build your interview discussion. This shows you are interested and __(41) __ close attention to the interviewer. It is a good idea to prepare a few questions in advance, but an insightful comment based on your conversation can make an even stronger statement. At the __(42) __ of the interview, it is appropriate for you to ask when you may expect to hear from the employer.

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Câu 9:

If the lecturer last night __________Dr. Mason, I would have listened carefully.

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Câu 10:

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Câu 11:

Choose the sentence that is closest in the meaning to the root one.

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Câu 12:

I _________Tom with me if I had known you and he didn’t get along well with each other

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Câu 13:

It wasn’t an awful experience. It was the worst thing _________has ever happened to me

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Câu 14:

Choose the correct answer that complete these given words.

He / suffer / rare tropical disease / which / contracted / while / Africa

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Câu 15:

Choose the correct answer that complete these given words.

Laser / device / concentrate / light waves / intense beam.

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