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As we all know, Neil Armstrong was _____...

As we all know, Neil Armstrong was _____ astronaut. And he was also _____ US citizen.

A. an, an  B. a, an   C. an, a   D.  a,  an

 

C 【解析】 试题分析:句意:我们都知道,尼尔·阿姆斯特朗是一名宇航员。他也是一位美国公民。astronaut ['æstrənɔːt]以元音音素开头,前面用不定冠词an;US [juːes] 以辅音音素开头,前面用不定冠词a。答案为C。 考点:考查冠词的用法。  
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