题目内容
While hewas investigating ways to improve the telescope, Newton made _________ discoverwhich completely changed______ man’s understanding of color.
- A.a; 不填
- B.a; the
- C.不填; the
- D.the; a
A
解析：
考查冠词的用法。第一空表示泛指。
解析：
考查冠词的用法。第一空表示泛指。
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