单项选择题

According to the passage, lung cancer ______.

A．is the major cause of death between the ages of 35 and 55
B．is most often caused by smoking
C．never affects non—smokers
D．has nothing to do with smoking

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单项选择题

The passage suggests that women ______.

A．smoke as much as men
B．react better than men to smoking
C．are affected by smoking only during pregnancy
D．run the risks as men if they smoke

单项选择题

What is the main idea of the passage

A．Man—smokers live shorter than woman—smokers.
B．All the deaths in Britain result directly from tobacco smoking.
C．Smoking is the main killer of babies.
D．Smoking can give rise to several major diseases.