77、汽车、汽车零配件( )可能含有磁性物质,虽然它不符合磁性物质定义,但由于对飞机的仪器有影响而需要特殊装载。

43、If you don’t have any( ),the security check will be very quick.

42、The purpose of security check is to prevent( ).

46、A:I have just checked in for Flight MU586.What should I do now?

45、I’m sorry to tell you that your flight has been delayed owing to( ).

44、A:( )

43、Which of the following is not the two letter code of American Airlines?

45、The security check is carried out for( ).

44、A:Can you( ) ?

43、A: I’ve heard an announcement that my flight has been delayed. Could you tell me why?

45、A: Where are you going?