单项选择题

If people am exposed to bright red, which of the following things does NOT happen

A．They breathe faster.
B．They feel afraid.
C．Their blood pressure rises.
D．Their hearts beat faster.
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单项选择题
Manufacturers found out that color affects sales______.
A．by experience over a long period of time
B．by experimenting with different colors
C．by trying out color on blind people
D．by developing the discipline of color psychology
单项选择题
Our preferences for certain colors are______.
A．associated with the time of day
B．dependent on our character
C．linked with our primitive ancestors
D．partly due to psychological factors
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