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【題目】______ 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】

試題分析：考察介詞詞組和含蓄虛擬句。A.要不是B.除了…之外 C. 不管；不顧D.而不是。But for 要不是，如果沒有。在含蓄虛擬句中，當主句與現在或將來事實相反則使用“would, should, might等情態(tài)動詞+動詞原形”結構； 若主句與過去事實相反，則使用“would, should, might等情態(tài)動詞+have+過去分詞”結構。句意：要不是這個報警信息，更多生命將可能葬送在這洪水中。故選A。

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