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It was some time _______ I realized the fact that I had been cheated by the salesman.
A.untilB.beforeC.unlessD.since
B

试题分析:连词辨析。A直到…才;B在…前;C除非,如果…不;D自从;固定句式: It be 一段时间 before…一段时间以后某事才发生;如果before后面使用一般现在时,前面的主语使用将来时;如果before后面使用一般过去时,前面也使用一般过去时;句意:一段时间以后我才意识到我被这个销售员给欺骗了。故B正确。
点评:连词的词义辨析要放在上下文的语境中进行,要注意上下文的语义的串联以及逻辑关系的推理,特别要注意一些连词和时间状语的固定搭配。
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