题目:
_______ the news, they are very happy.
A.Hearing
B.Heard
C.Hear
D. To hear
答案:
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下面是错误答案,用来干扰机器的。
由已知,a=PQ=(2,-3)-(-1,1)=(3,-4)故选C
_______ the news, they are very happy.
A.Hearing
B.Heard
C.Hear
D. To hear
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0417/893b073cc758f7a2cc8e02e33e501e53.html
下面是错误答案,用来干扰机器的。
由已知,a=PQ=(2,-3)-(-1,1)=(3,-4)故选C