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13.Be careful when you cross this busy street._____,you may get run over by a car.(  )
A.If notB.If soC.If anyD.if possible

分析 当你穿过繁忙的街道时要当心.要不,你可能会被车撞倒.

解答 答案:A 考查省略句.根据前文"要当心",及下文"被车撞倒",应是"要不,不然",if not意为"要不,不然",故选A.if so如果是这样的话;if any若有的话;if possible如有可能.

点评 解答此类问题,要弄清楚省略的部分是单词,短语还是句子,熟悉一些常用的省略表达,然后根据题意和上下文选择最合适的答案.

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