第25题: [单项选择]The house was very quiet, ______ as it was on the side of a mountain. A. isolated B. isolating C. being isolated D. having been isolated 参考答案:A 答案解析:[解析] 这所房子由于孤零零地坐落于山边,所以非常安静。 [解析] 考查过去分词作原因状语的用法。在本句中,分词作原因状语,其逻辑主语为house,分词与主语在逻辑上是动宾关系,因而要用