Read the following passage and choose the best answer (A, B, C, or D) to complete the passage.
Câu hỏi :
Read the following passage and choose the best answer (A, B, C, or D) to complete the passage.
Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these radio waves might (21) _____ 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 (22) _____ 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. (23) _____, 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 (24) _____ of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the (25) _____ and they may be just as dangerous. It is also thought that young people whose bodies are still growing may be at particular risk.
Read the following passage and choose the best answer (A, B, C, or D) to complete the passage.
Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these radio waves might (21) _____ 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 (22) _____ 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. (23) _____, 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 (24) _____ of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the (25) _____ and they may be just as dangerous. It is also thought that young people whose bodies are still growing may be at particular risk.
* Đáp án
B
* Hướng dẫn giải
Kiến thức: Từ vựng
Giải thích:
A. bring (v): đưa ra, đem lại B. lead + to + N: dẫn đến, gây ra
C. produce (v): sản xuất D. cause (v): gây nên, gây ra
Researchers are questioning whether exposure to these radio waves might (21) lead to brain cancer.
Tạm dịch: Các nhà nghiên cứu đang nghi ngờ liệu tiếp xúc với các sóng vô tuyến có thể dẫn đến ung thư não.
Chọn B
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