While he was investigating ways to improve the telescope, Newton made discovery
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While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed ______ man’s understanding of colour.
A. a; 不填 B. a; theC. 不填; the D. the; a
试题答案
A
解析:
根据语境得知牛顿的一次发现是泛指，应用不定冠词；man表示“人类”，其前不用冠词。