分类：教育/科学-外语学习
问题：16.一道英语选择题,求详解Whilehewasinvestig 
While he was investigating ways to imve the telescope,Newton made__discovery which completely vhanged__mains understanding of colour.Aa,/ Bthe,/ C/,the D/,/
回答：A 前面指一项发现，泛指，用a; 后面man不用冠词，表示人，人类