1. In the experiment we kept a watchful eye _____ the developments and recorded every detail.
A) in B) at C) for D) on中华考试网(www.Examw。com)
2. There’s little chance that mankind would ________ a nuclear war.
A) retain B) endure C) maintain D) survive
3. Nuclear science be developed to benefit the people ________ harm them.
A) more than B) other than C) rather than D) better than
4. The French pianist who had been praised very highly ________ to be a great disappointment.
A) turned up B) turned in C) turned out D) turned down
5. Many difficulties have ________ as a result of the change over to a new type of fuel.
A) risen B) arisen C) raised D) arrived
答案：1-5 DDCCB
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