The line was bad .We couldn't

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hear1.听见;听
I heard him say so.
我听到他这么说过.
I can hear someone knocking.
我听到有人敲门.
listen
1.听,留神听
She's listening to the radio.
她在听广播.
sound1．听起来,听上去
It sounds nice
听起来美妙speak to
1.提及We haven't much time,please speak to the subject.
我们时间不多,请不要离开话题.
所以选择A（因为楼上的翻译很好,我就不翻译了,通过字的意思和语感是可以做出的,如果不知道意思,多读也是一种方法,而且这种方法很适合在考试中,试试看吧）