－Why did you arrive late?(成都市)－The fog our air flight for about half an hour.A. held upB.

问题补充：

－Why did you arrive late?(成都市)

－The fog our air flight for about half an hour.

A. held up

B. turned down

C. broke up

D. pulled down

答案：

(答案→)A. held up

B. turned down

C. broke up

D. pulled down

解析：考查短语辨析。held up 阻止，turned down调低，拒绝，broke up 分散，pulled down 拆毁，句意：你为什么到达晚了？大雾阻止了我们的航班大约半小时。所以选A。