单项选择题

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

A．They breathe faster.
B．Their blood pressure rises.
C．They feel afraid.
D．Their hearts beat faster.
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单项选择题
Our preferences for certain colors are ______.
A．associated with the time of day
B．dependent on our characters
C．linked with our primitive ancestors
D．partly due to psychological factors
单项选择题
The passage is mainly about ______.
A．the contradiction between economists and the business community
B．the present debate on economic growth
C．the advantages and disadvantages of economic growth
D．the importance of the debate on economic growth
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