单项选择题

As physical exercise declines and diet expands, _________.

A．other western countries has been defeated by fat
B．obesity has become an epidemic (流行病) of the rich world
C．waistbands begin to be popular in other western countries
D．western countries can no longer fight against obesity
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单项选择题
A murder would most likely occur _________.
A．on a weekend night in summer
B．on a weekday night in summer
C．on a weekend night in winter
D．on a weekday afternoon in winter
单项选择题
In Paragraph 4, why is there an exclamation point (!) after the last sentence
A．Because the author is surprised that so many people marry in summer.
B．Because the author is surprised that the marriage peak occurs in the same month as the suicides and mental hospital peak.
C．Because the author doesn't understand why the peak for suicides and marriage is in the same month.
D．Because this is the focus of the author's research which he wants to call our attention to.
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