题目内容

弯曲是指把金属坯料弯成一定或的过程。

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弯曲时最小弯曲半径越小则表示材料所允许的变形程度越大。（）

A. 对
B. 错

It is the first time we _______a foreign guest

A. have been
B. had had
C. have done
D. have had

I like the way ______he talks

A. where
B. in which
C. when
D. what

Compared with the former, the _____is more acceptable

A. late
B. later
C. lately
D. latter