Would you please keep silent? The news that the milk contains a harmful chemical _________and I want to listen.
A．has been broadcastB．is being broadcastC．is broadcast D．is broadcasting
B
考察時態(tài)。根據(jù)上下文可知這則消息正在被廣播，故使用現(xiàn)在進行時的被動語態(tài)。故B正確。
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