10．一I'm totally confused about why she steals things_____ she can easily afford to buy them．
-God knows!（　�。�
A．ifB．whenC．whileD．because

分析 --我完全很疑惑為什么她要偷東西既然她能輕而易舉就買了它們．
--誰知道呢！

解答 答案：C 考查狀語從句，if引導(dǎo)條件狀語從句，when引導(dǎo)時間狀語從句，while在此句引導(dǎo)讓步狀語從句，表"既然"，because引導(dǎo)原因狀語從句，根據(jù)句意可知答案為C．

點評 考查從句的引導(dǎo)詞，要學(xué)會分析句子成分，對引導(dǎo)詞進行確定．

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