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Câu hỏi: Read the following passage and mark the letter A, B, C or Don your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
Mobile phones emit microwave radio emissions. Investigators are questioning whether exposure to these radio waves might (34) ________to brain cancer. So far, the figures are not final. The precise evidence does not enable US to say in certain that mobile phones are definitely safe. On the other hand, recent research has not yet (35) ________clear adverse effect associated with the prolonged use of mobile phones.
(36) ________studies are now going on in numerous countries. Some of the results are contradictory but the others have shown an association between mobile phone use and cancer. However, these studies are preliminary and the issue need further, long - term investigation.
(37) ________the scientific data is more definite, it is advisable for people to try not to use mobile phone for long periods of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the opposite and they may be just as hazardous. It is also thought that young people (38) ________bodies are still growing may be at particular risk.
The word or phrase which best fits the gap (37) is...
A. Until
B. When
C. Although
D. As
Mobile phones emit microwave radio emissions. Investigators are questioning whether exposure to these radio waves might (34) ________to brain cancer. So far, the figures are not final. The precise evidence does not enable US to say in certain that mobile phones are definitely safe. On the other hand, recent research has not yet (35) ________clear adverse effect associated with the prolonged use of mobile phones.
(36) ________studies are now going on in numerous countries. Some of the results are contradictory but the others have shown an association between mobile phone use and cancer. However, these studies are preliminary and the issue need further, long - term investigation.
(37) ________the scientific data is more definite, it is advisable for people to try not to use mobile phone for long periods of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the opposite and they may be just as hazardous. It is also thought that young people (38) ________bodies are still growing may be at particular risk.
The word or phrase which best fits the gap (37) is...
A. Until
B. When
C. Although
D. As
Kiến thức: Liên từ
Giải thích:
A. Until: cho tới khi
B. When: khi
C. Although: mặc dù
D. As: bởi vì/ khi
Trích bài: Until the scientific data is more definite, it is advisable for people to try not to use mobile phone for long periods of time.
Tạm dịch: Cho đến khi các dữ liệu khoa học chắc chắn hơn, mọi người nên cố gắng không sử dụng điện thoại di động trong thời gian dài.
Giải thích:
A. Until: cho tới khi
B. When: khi
C. Although: mặc dù
D. As: bởi vì/ khi
Trích bài: Until the scientific data is more definite, it is advisable for people to try not to use mobile phone for long periods of time.
Tạm dịch: Cho đến khi các dữ liệu khoa học chắc chắn hơn, mọi người nên cố gắng không sử dụng điện thoại di động trong thời gian dài.
Đáp án A.