单项选择题

In paragraph 3, "such a reaction" refers back to（）

A．asking a choice between "flight or fight"
B．"reaction to stress both chemically and physically"
C．"responding to crises quickly"
D．"losing heart at the signs of difficulties"

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单项选择题

People are finding less and less time for relaxing themselves because（）

A．they do not know how to enjoy themselves
B．they do not believe that relaxation is important for health
C．they are traveling fast all the time
D．they are becoming busier with their work

单项选择题

In the last sentence of the passage, deal with it refers to（）

A．"expose ourselves to stress"
B．"find ways to deal with stress"
C．"remove stress from our lives"
D．"establish links between diseases and stress"