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问题 单项选择题

粉末显微观察，可见骨组织构造的中药是

A．龙骨

B．赤石脂

C．玛瑙

D．琥珀

E．煤珀

答案

参考答案：A

选择题
Almost _____ of the students in this class _____ glasses, that is _____ of them.

A. two thirds; wear; 60 percent
B. two thirds; wear; 60 percents
C. two third; wears; 60 percent
D. two third; wears; 60 percents
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选择题

I think this is the first time that we have met.＿＿＿anywhere.

A．Before have we never seen each other

B．Never before we have seen each other

C．Each other have we seen never before

D．Never before have we seen each other
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