What is an effective way to preserve biodiversity？
A. Reduction of the impact of species extinction on others.
B. Sustainable management of the world's tropical forests.
C. Encouragement of political will to reduce gas emission.
D. None of the above. No effective way has been found yet.
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By "only two-thirds as bad as the ones on at the moment" the author means_____.
A. better than
B. as bad as
C. worse than
D. as good as
It can be inferred from the last paragraph that____.
A. the issue of human cloning will soon be settled
B. some NBAC members hesitate to ban human cloning completely
C. privately funded researchers will respond positively to NBAC's appeal
D. a law banning human cloning is to be passed immediately
By using the phrase "the human quality of technology"(Line 5,Para. 2),the author refers to the fact that technology_____.
A. has a great impact on human mind
B. has some characteristics of human nature
C. can replace some aspects of the human mind
D. does not exist in the natural world
【B12】
A. However
B. Therefore
C. Sometimes
D. Although
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