while he was looking for ways to improve the reflecting tele

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/20 08:08:43

while he was looking for ways to improve the reflecting telescope ,Newton made ( ) discovery which completely changed ( ) man "s understanding of color.
A a 不填 B a the C不填 the Dthe a

选A
第一空是made a discovery,意思有一个发现,明显是单数
第二空因为没有特指是什么年代的人因而不算特指不用the,不填,变成changed man's understanding of colo

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