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14.-Was it because of his laziness_______ he didn't do the experiment successfully?
-No,it was because of his carelessness.(  )
A.thatB.whileC.forD.as

分析 --是因为他的懒惰导致他没有成功做成实验?
--不,是因为他的粗心.

解答 答案:A
此题考查强调句的一般疑问句.其结构是:Is/Was+it+被强调部分+that/who+句子剩余部分?强调人时,用who,其它用that.此处强调原因.故选A项.

点评 记住强调句结构:"It is/was+被强调部分+that/who+句子剩余部分.强调人时,用who,其它都用that.其一般疑问句是Is/Was+it+被强调部分+that/who+句子剩余部分?特殊疑问句是:特殊疑问词+is/was+it+被强调部分+that/who+句子剩余部分?"做此类题目就很简单了.

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