M: before Columbus came to America

F: They started growing tobacco before Columbus came to America.

M: How long has the American tobacco industry been large?

M: ever since colonial farmers grew tobacco in large quantities

F: It has been large ever since colonial farmers grew tobacco in large quantities.

M: How long has the tobacco industry been important for America's economy?

M: ever since colonial farmers grew tobacco for export

F: It has been important for America's economy ever since colonial farmers grew tobacco for export.

M: How long has cigarette smoking been popular in the U.S.?

M: since the 1800's

F: It has been popular in the U.S.since the 1800's.

M: When did the tobacco industry begin selling different brands of cigarettes?

M: When cigarettes smoking became popular

F: It began selling different brands of cigarettes when cigarette smoking became popular.

M: When did the tobacco industry begin selling cigarettes with filters?

M: after ailments were linked to smoking.

F: It began selling cigarettes with filters after ailments were linked to smoking.

M: How long has cigarette smoking been expensive?

M: since taxes on cigarettes were increased in the 1970's

F: It has been expensive since taxes on cigarettes were increased in the 1970's.

M: How long has physical fitness been a major aim of millions of Americans?

M: since the late 1970's

F: It has been a major aim of millions of Americans since the late 1970's.

M: When were regulations on cigarette smoking instituted?

M: after smoking was found to be dangerous to health

F: They were instituted after smoking was found to be dangerous to health.

M: When did the number of smokers start to decline?

M: after people were warned that smoking was dangerous to health

F: The number started to decline after people were warned that smoking was dangerous to health.

三.听短文回答问题

今天我们要听的文章简单说到美国烟草工业的历史, 同时也谈到在美国人们 因为注重健康而避免抽烟的趋势. 文章里许多词汇都是我们刚才练习过的.

现在请你注意听.

American Indians grew and smoked tobacco before Columbus came to America.

The tobacco industry has been large and important for America's economy ever since colonial farmers grew tobacco for export 300 years ago. Even today tobacco is grown in large quantities along America's Eastern Coast.

Since the 1800's the most common form of smoking tobacco is in cigarettes. Men and women of all ages smoke cigarettes and there are dozens of brands sold in the U.S.

Nearly all cigarettes now sold have filters. Pipe smoking has some popularity and cigars are usually only smoked by older men.

Over the past fifteen years, many people have stopped smoking. This movement away from cigarettes began when lung cancer and other ailments were linked to smoking.

In the 1970's when taxes on cigarettes were greatly increased, cigarette smoking became much more expensive. Since the late 1970's physical fitness has become a major aim of millions of Americans. These three factors have been the major causes for many people to stop smoking.