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15.______ astronaut is telling his son about ______ educational book.(  )
A.The; aB.The; anC.A; an

分析 这个宇航员正在给儿子讲一本有教育意义的书.

解答 正确答案:B.根据句意第一空特指宇航员,则应填写定冠词the,第二空泛指一本有教育意义的书,且educational首字母发元音音素[e],则应填写不定冠词an,故选择B.

点评 本题考查冠词,基础题,掌握冠词与不定冠词的基本用法及区别,根据题干即可作出选择.

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