Choose the correct word or phrase A, B, C or D that best completes the passage. Mobile phones
Choose the correct word or phrase A, B, C or D that best completes the passage.
Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these radio waves might (34) _________ to brain cancer. So far, the data are not conclusive. The scientific evidence does not enable us to say with certainty that mobile phones are categorically safe. On the other hand, current research has not yet (35) ________ clear adverse effect associated with the prolonged use of mobile phones. Numerous studies are now going on in various countries. Some of the results are contradictory but others have shown an association between mobile phone use and cancer. (36) ________, these studies are preliminary and the issue needs further, long - term investigation.
Until the scientific data is more definite, it is prudent for people to try not to use mobile phone for long (37) _________ of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the (38) _________and they may be just as dangerous. It is also thought that young people whose bodies are still growing may be at particular risk.
Trả lời cho các câu 1, 2, 3, 4, 5, 6 dưới đây:
34.
Đáp án đúng là: D
Đáp án cần chọn là: D
35.
Đáp án đúng là: A
Đáp án cần chọn là: A
36.
Đáp án đúng là: D
Đáp án cần chọn là: D
37.
Đáp án đúng là: B
Đáp án cần chọn là: B
38.
Đáp án đúng là: C
Đáp án cần chọn là: C
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