Câu hỏi:
12/03/2020 643Read the following passage on transport, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 38 to 42
Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones 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 traveling 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 cellphones are mainly concerned with ______.
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Đáp án B
Giải thích: “On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones”. Brain cells = the smallest units of the brain: tế bào não
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
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.
Many successful (A) film directions (B) are former (C) actors who desire to expand (D) their experience in the film industry.
Câu 2:
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.
We admire Lucy for (A) her intelligence (B), cheerful disposition (C) and she is honest. (D)
Câu 3:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
The old houses were ______ down to make way for a block of flats.
Câu 4:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
The building has a smoke detector ______ any fires can be detected immediately.
Câu 5:
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.
David drove so fast; it was very dangerous.
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 car is getting unreliable; I think I'll trade it ______ for a new one.
Câu 7:
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.
Educated in the UK (A), his qualifications are (B) widely recognized (C) in the world of professionals. (D)
30 đề thi THPT Quốc gia môn Tiếng Anh năm 2022 có lời giải (Đề 1)
20 Đề thi thử THPTQG môn Tiếng Anh cực hay có đáp án (Đề số 1)
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 1)
30 đề luyện thi Đại Học môn Tiếng Anh cực hay có lời giải (Đề số 1)
Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 1)
20 BỘ ĐỀ THI THỬ THPT QUỐC GIA LẦN 1 NĂM HỌC 2018 - 2019 MÔN: TIẾNG ANH(ĐỀ 16)
Tổng hợp đề thi thử tiếng anh thpt quốc gia (Đề số 1)
Tổng hợp đề thi thử THPTQG môn Tiếng Anh có đáp án (Đề số 1)
về câu hỏi!