第4题: [单项选择]She was ______ and seemed to be able to accomplish the impossible. A. a paper tiger B. a feather in her cap C. a bird of ill omen D. a ball of fire 参考答案:D 答案解析:句意:她是一个精力充沛的人,似乎能实现不可能的事情。a ball of fire生龙活虎的人,精力充沛的人。a paper tiger纸老虎,外强中干。a feather in one’s cap值得