第24题: [单项选择]______ security concerns, the Federal Aviation Authority decided to cancel Flight 206A to Washington. A. Despite B. Rather than C. If so D. Owing to 参考答案:D 答案解析:[语法] 表示原因的介词owing to(由于) [错误答案] (A)尽管…… (B)宁可……也不要 (C)要是这样
第25题: [单项选择]In no way ()from practice. A. theory can be separated B. theory is separated C. can theory be separated D. has theory been separated 参考答案:C 答案解析: