第31题: [单项选择]______ at from outer space, the Earth is just like a ball hanging in the universe. A. Having looked B. Looking C. Looked D. Having been looked 参考答案:C 答案解析:根据选项来看,本题中的前半句为分词短语作状态语,分词短语作状语时,其逻辑主语要与主句主语保持一致。本题中分词动作与主句的谓语动作应该是同时的,不能用现在分词的完成式,因而可以排除A和 D,而且,对于主