51、测试紫光灯是否处于正常工作状态应使用( )。

44、Security check usually consist of( ).

75、( )refers to goods prohibited by law or treaty from being imported or exported.

74、Can you put me on( )flight to Harbin?

73、All the flights before nine ( ) because of poor visibility this morning.

72、I’m ( ) to tell you that your flight has been delayed owing to mechanical difficulties.

13、——I forgot to carry my permit with me, would you please let me in?
——( ).

12、Restricted area is sometimes called( ).

11、Can you suggest me an alternate flight?
——( )

10、I’d like to( ) for the inconvenience caused by this delay.

9、A: Could you tell me why Flight MU595 hasn’t departed yet?