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    【题目】______ the warning message, more lives would have been lost in the flood.

    A．But for B．Except for

    C．Regardless of D．Instead of

    【答案】A

    【解析】

    试题分析：考察介词词组和含蓄虚拟句。A.要不是B.除了…之外 C. 不管；不顾D.而不是。But for 要不是，如果没有。在含蓄虚拟句中，当主句与现在或将来事实相反则使用“would, should, might等情态动词+动词原形”结构； 若主句与过去事实相反，则使用“would, should, might等情态动词+have+过去分词”结构。句意：要不是这个报警信息，更多生命将可能葬送在这洪水中。故选A。

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