问题
选择题
—Flight CA 581_____________. I must be off now. —Have a nice trip.
A．is being announced
B．has announced
C．was announcing
D．will be announced
答案
答案：A
本题考查时态和语态。从语境知“CA 581航班正在通知(登机中)”，此处强调“现在这个时刻正在进行”的动作，所以用现在进行时，同时announce与Flight CA 581又是动宾关系，故用“现在进行时的被动语态”。