◎ 题干
---Look! The telephone is broken. Someone damaged it ________ purpose.
---That may be right. But perhaps it was broken _________ accident.
A.on; by B.by; by C.on; on D.by; on
◎ 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“---Look! The telephone is broken. Someone damaged it ________ purpose.---That may be right. But perhaps it was broken _________ accident.A.on; by B.by; by …”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。