题目内容
Until the twentieth century cigarettes were not an important threat to public health. Men used tobacco mainly in the form of cigars. Most women did not use tobacco at all. The cigarette industry began in the 1870s with the development of the cigarette manufacturing machine. This made it possible to produce great numbers of cigarettes very quickly, and it reduced the price.
Today cigarette smoking is a widespread habit. About forty-three percent of the adult men and thirty-one percent of the adult women in the
Men as a group smoke more than women. Among both men and women the age group with the highest proportion of smokers is the age group 24-44. Income, education, and occupation all play a part in determining a person’s smoking habits. 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 smokes at all, he is likely to smoke more packs of cigarettes per day. Among teenagers the picture is similar. There are fewer teenager smokers from upper-income, well-educated families, and fewer from families living in farm areas. High school students who are preparing for college are less likely to smoke than those who do not plan to continue their education after high school. Children are most likely to start smoking if one or both of their parents smoke.
73. Why wasn’t cigarette smoking so dangerous in the 19th century? （不超过10个单词）
74. Find three main factors closely related to one’s smoking habits. （不超过4个单词）
75. What is the main idea of the passage？ （不超过10个单词）73. Because tobacco in the form of cigarettes didn’t exist. / Because the cigarette industry didn’t begin.
74. The smoking habits are among different kinds of people.
75. Occupation, education and economy/income.
