◎ 题干
— The MP3 cost me about 2,000 yuan. 
— Well, it was crazy of you to spend so much money _____ you could buy a cheaper one.
[     ]
A. when
B. unless
C. if
D. because
◎ 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 MP3 cost me about 2,000 yuan.— Well, it was crazy of you to spend so much money _____ you could buy a cheaper one. [ ]A. when B. unless C. if D. becau…”主要考查了你对  【从属连词】  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。