第7题: [单项选择]There is a real possibility that these animals could be frightened, ______ a sudden loud noise. A. being there B. there having been C. there was D. should there be 参考答案:D 答案解析:本题中that引导的从句部分要求使用虚拟语气,其中should there be等同于 if there should be。考查的是对“省略if并采用倒装结构的虚拟条件句”的掌握,故应选D。