单项选择题

Colorblind people find it difficult to（）shades of colors.

A. distinguish
B. pick
C. identify
D. recognize

<上一题目录下一题>

热门试题

单项选择题

They hardly believed that the troop（）the river that night, and surrounded their city.

A. to cross
B. had crossed
C. crossing
D. cross

相关试题