◎ 题干
_______ the people have become masters of their country _______ science can really serve the people.
A.It is only then; that 
B.It was that; when
C.It is only when; that
D.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 masters of their country _______ science can really serve the people.A.It is only then; that B.It was that; whenC.It is only …”主要考查了你对  【强调句】  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。