题目内容

Three weeks after the suicidal bombing, the police were still hunting for bombers for they believe more were ______.

A. on the verge
B. on the sly
C. on the spot
D. on the loose

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She bought a new hike last Sunday, because her old one()

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C. was stolen
D. stolen

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A. 鱼藤酮
B. 抗霉素A
C. 氰化物
D. 2,4-二硝基苯酚

We have four computers in our office but()of them are in good order.

A. all
B. none
C. one
D. both

世界上首次人工合成具有生物活性酵母tRNAAla的国家是()

A. 美国
B. 中国
C. 英国
D. 法国

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