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【题目】If we learn more about DNA, we ______ more diseases.

A.treatB.treatsC.willtreatD.weretreating

【答案】C

【解析】

句意:如果我们对DNA有更多的了解,我们就会治疗更多的疾病。

考查if引导的条件状语从句的主将从现。treat一般现在时的动词原形;treats一般现在时的动词三单;willtreat一般将来时;weretreating过去进行时。分析句子可知,此句是if引导的条件状语从句,需满足“主将从现”原则。主句用一般将来时,从句用一般现在时。故选C

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