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问题 单项选择题

在弯制磨牙卡环时，常用的钢丝规格是（）

A.直径为0.5mm的钢丝

B.直径为0.7mm的钢丝

C.直径为0.8mm的钢丝

D.直径为0.9mm的钢丝

E.直径为1.2mm的钢丝

答案

参考答案：D

判断题

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改错题
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小题2:It was generous for her to give the beggar so much money.
小题3:Meetings and appointments take away most of my time.
小题4:As melly gas came out from the cracks of the well.
小题5:The computer was broke down. It needs repairing.
小题6:Andrew as well as Martin and Jim are fond of music.
小题7:You’ll regret to have said those words.
小题8:In 1983,therewereonly 200 computers connecting to the Internet.
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