The main idea of paragraph 2 is______.
A. colors may have effect on our work and study
B. colors do have effect on our moods (情绪)
C. light and bright colors make people happy
D. factory workers can work better in a bright room
正确答案：B
37．答案为B颜色能影响人的情绪比较四个选项只有B概括了第二段的大意
