◎ 题干
___the people have become the master of their own country___science can really serve the people.
A.It is only then; thatB.It was that; when
C.It is only when; thatD.It was when; then
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“___the people have become the master of their own country___science can really serve the people. A.It is only then; thatB.It was that; when C.It is only when;…”主要考查了你对  【人称代词】【相互代词】【疑问代词】【关系代词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。