单项选择题

By saying "insomnia is caused by life" (Para. 3), the author means that ______.

A．any human being may be down with insomnia
B．any style of life can lead to insomnia
C．any fragment of life can cause insomnia
D．any day of life can result in insomnia

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单项选择题

According to Waite and Gallagher's book, divorce is responsible for its harmful effects on all the following EXCEPT ______.

A．social recognition
B．physical health
C．financial success
D．children's development

单项选择题

It can inferred from Para. 4 that the author is ______.

A．dubious about the expert's claim
B．opposed to tax cuts
C．doubtful about the effectiveness of the new pills
D．happy about the economic situation