◎ 题干
— Look! The telephone is broken. Someone damaged it ______ purpose.
— That may be right. But perhaps it was broken ______ accident.

  [     ]

A. on; on
B. on; by
C. by; by
D. by; on
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Look! The telephone is broken. Someone damaged it ______ purpose. — That may be right. But perhaps it was broken ______ accident. [ ]A. on; on B. on; …”主要考查了你对  【介词和介词短语】  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。