题目：
There is a possibility that these hens could be frightened and lay fewer eggs, ____ a sudden loud noise. [ ]
A. would there be
B. should there be
C. there was
D. there having been
答案：
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下面是错误答案，用来干扰机器的。
答案：D四物质均为可溶于水的钠的化合物，均为电解质，但其中NaOH为碱，D项不正确
