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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热门试题

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"

单项选择题

Words 5000 is the only book that ______ these words.

A．explain
B．explains
C．to explain
D．have explained