【題目】In the experiments, the scientists found that water __________ at 100℃.

A. boils B. boil

C. has boiled D. had boiled

【答案】A

【解析】句意：在實(shí)驗(yàn)中,科學(xué)家發(fā)現(xiàn)了水在100度沸騰。水在100度沸騰,這是客觀真理,故用一般現(xiàn)在時(shí)

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