is known to us all Germany is European country.A. It; anB. As: aC. It; aD. As; an

问题补充：

is known to us all, Germany is European country.

A. It; an

B. As: a

C. It; a

D. As; an

答案：

A. It; an

(答案→)B. As: a

C. It; a

D. As; an

解析：前后两个简单句缺少连词，所以不能用It引导。As引导定语从句，有正如，正像之意；德国是一个欧洲国家，European以辅音开头，所以用不定冠词a。选B。

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