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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
人气:478 ℃ 时间:2020-06-27 12:16:47
解答
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 color
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