单选题 {{B}}Passage 3{{/B}}

Today, cigarette smoking is a common habit. About forty-three percent of the adult men and thirty-one percent of the adult women in the United States smoke cigarettes regularly. It is encouraging to see that millions of people have given up smoking.
It is a fact that men as a group smoke more than women. Among both men and women the age group with the highest proportion of smokers is 24～44.
Income, education, and occupation all play a part in determining a person's smoking habit. City people smoke more than people living on farms. Well-educated men with high incomes are less likely to smoke cigarettes than men with fewer years of schooling and lower incomes. On the other hand, if a well-educated man with a higher income smoked at all, he is likely to smoke more packs of cigarettes per day.
The situation is somewhat different for women. (80) {{U}}There are slightly more smokers among women with higher family income and higher education than among the lower income and lower educational groups. {{/U}}.These more highly .educated women tend to smoke more heavily.
Among teenagers the picture is similar. There are fewer teenaged smokers from upperincome, well-educated families, and fewer from families living in farm areas. Children are most likely to start smoking if one or both of their parents smoke.

单选题 What do we know from the first paragraph?

单选题 What factors determine a person's smoking habits?

单选题 Which of the following is true according to the passage?

【正确答案】 D

【答案解析】高知识、高收入的男人不太容易吸烟。文章第三段提到，Well-educated men with high incomes are less likely to smoke cigarettes than men with fewer years of schooling and lower incomes. 文化程度和收入程度越高，吸烟的人越少。所以选D。

单选题 What is the smoking situation for women?

单选题 What can we say about teenaged smokers?

【正确答案】 B

【答案解析】青少年的情况与成年男人相似。最后一段提到There are fewer teenaged smokers from upper-income，well-educated families，and fewer from families living in farm areas.那些来自高收入、高知识家庭和农场区家庭的孩子吸烟的人数较少。