2. 外语
  3. There is a real possibility that these animals could be frightened,______a sudden loud noise.

There is a real possibility that these animals could be frightened,______a sudden loud noise.

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问题 There is a real possibility that these animals could be frightened,______a sudden loud noise.
选项 A、being there
B、should there be
C、there was
D、there have been
答案B
解析 该题是语法结构题，考查虚拟语气的用法。当虚拟语气用在非真实条件状语从句中时，引导从句的引导词if可以省略，把助动词should，were或had提到主语前面。在该句中，条件句中的引导词if被省略了，助动词should提前了。因此，根据题意和语法规则，选项B为最佳答案。
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