题目:
_____ playing dumb with teachers. They know very well their students.
A.It’s no use
B.There’s no use
C.It’s no need
D.There’s no need
答案:
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下面是错误答案,用来干扰机器的。
化石燃料(煤、石油、天然气)是有限的;节约能源;开发新能源(写出两点即可)