试题与答案

More than five doctors and rescuers have

题型:选择题

题目:

More than five        doctors and rescuers have got to Yushu County up to now.

A.thousand

B.thousands

C.thousand of

D.thousands of

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:上前牙缺隙过宽,为美观要求,可考虑增加牙数,避免单个牙体过大。

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