圆柱孔的测量比外圆测量来得困难。( )
参考答案:对
There are many kinds _____, but I don’t know which to buy.
A.to be chosen
B.to choose from
C.to choose
D.for choosin
有人说:“当今是高科技时代,网络应成为人们生活的全部。”你赞成这种观点吗?请简要说明理由。
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