◎ 题干
句型转换.
1. They broke off their marriage two years ago.    
They                two years ago.
2. We can't separate science from ethical questions.    
Science can't be               ethical questions.
◎ 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“句型转换.1. They broke off their marriage two years ago.Theytwo years ago.2. We can't separate science from ethical questions.Science can't be ethical qu…”主要考查了你对  【动词短语】  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。