There is a possibility that these hens could be frightened and lay fewer eggs a sudden loud noise.A.should there beB.there wasC.would there beD.there having been
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A解析试题分析：考查虚拟语气中的倒装。根据语意，原句应为…if there should be a sudden loud noise，if虚拟条件句中有should时，可以把if省略，should提前，变成should there be 结构，据此选A.考点：考查虚拟语气中的倒装点评：if的非真实条件句，可以用省略倒装句，省略if，将should，were，had提前，意思是一样的，就是更简洁。