单项选择题

From Paragraph 5 we can learn that ______.

A．the number of segregated smokers is on the rise
B．the number of male smokers is decreasing gradually
C．the number of female smokers is increasing now
D．the number of nonsmokers is larger than that of smokers

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单项选择题

How many children's museums have been set up in America in the past 15 years

A．About 100.
B．Over 180.
C．Less than 80.
D．Altogether 215.

单项选择题

Which of the following is aimed at the restriction of smoking according to the passage

A．Closing down large numbers of cigarette factories.
B．Rewording those who never smoke.
C．Encouraging export of cigarettes.
D．Putting health warnings on cigarette packages.