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Câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.
Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these radio waves might (33) _ to brain cancer. So far, the data are not conclusive. The scientific evidence does not enable us to say with certainly that mobile phones are categorically (34) _________. On the other hand, current research has not yet proved clear adverse effects associated with the prolonged use of mobile phones.
Numerous studies are now going (35)_________ in various countries. Some of the results are contradictory but others have shown an association between moblie phone use and cancer. (36) _________ , these studies are preliminary and the issue needs further, long-term investigation.
Until the scientific data are more definite, it is prudent for people to try not to use mobile phones for long period 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 dangerous. It is also thought that young people (37) _________ bodies are still growing may be at particular risk.
The word or phrase which best fits the gap (36) is...
A. Additionally
B. However
C. While
D. Though
Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these radio waves might (33) _ to brain cancer. So far, the data are not conclusive. The scientific evidence does not enable us to say with certainly that mobile phones are categorically (34) _________. On the other hand, current research has not yet proved clear adverse effects associated with the prolonged use of mobile phones.
Numerous studies are now going (35)_________ in various countries. Some of the results are contradictory but others have shown an association between moblie phone use and cancer. (36) _________ , these studies are preliminary and the issue needs further, long-term investigation.
Until the scientific data are more definite, it is prudent for people to try not to use mobile phones for long period 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 dangerous. It is also thought that young people (37) _________ bodies are still growing may be at particular risk.
The word or phrase which best fits the gap (36) is...
A. Additionally
B. However
C. While
D. Though
Chọn However vì khi câu có "however" thì nghĩa của câu này sẽ đối lập với câu ta vừa nói đến ở trên. Hơn nữa, vị trí của chỗ trống ở đầu câu và ngăn cách với các thành phần khác của câu bằng dấu "phẩy" nên chọn However là hợp lý nhất
Những phương án còn lại sai nghĩa và ngữ pháp:
additionally: thêm vào đó
while: trong khi
though: mặc dù
Những phương án còn lại sai nghĩa và ngữ pháp:
additionally: thêm vào đó
while: trong khi
though: mặc dù
Đáp án B.