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【题目】Stephen Hawking,________brilliant scientist,is giving a lecture about black holes in ________ space.
A./;the
B.a;the
C.a;/
D./;/

【答案】C
【解析】第一个空泛指一位杰出的科学家,应使用不定冠词。第二个空in space意思是“在太空中”,space前不使用冠词;句意:斯蒂文霍金,杰出的科学家,正在做有关太空里黑洞的讲座。根据句意,故选C。

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