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 broadcast
C．is being broadcast
D．is broadcasting
答案
答案：C
题目分析：考查时态，消息是被报道，所以用被动式，由后面的句子I want to listen可以知道是正在被报道，所以选C，句子意思“牛奶含有有毒的化学物质的消息正在被报道我想听”
点评：做时态题时，首先看时间状语，由时间状语判断时态；如果没有时间状语，从句子暗含的意思来判断句子时态
