朴籾
諒籾   厚仟扮寂2023/4/3 12:59:00

10.
(4蛍)While he was investigating ways t improve the telescope Newton made _______discovery which completely changed ____ man¨s understanding of color.

A. a ,/
B. a ,the
C. /, the
D. the ,a

藍析弗:19139051760(王嬉)