问题
选择题
Would you please keep silent? The news that the milk contains a harmful chemical _________and I want to listen.
A．has been broadcast
B．is being broadcast
C．is broadcast
D．is broadcasting
答案
答案：B
考察时态。根据上下文可知这则消息正在被广播，故使用现在进行时的被动语态。故B正确。