Unit 3 第一部分單詞拼寫
every day we meet smokers everywhere. there are 5.8 billion people in the world, among whom there are 1.1 billion smokers and this makes up 20 percent of the world's population.
smoking is harmful. it costs a great deal of money.200 billion dollars are spent on smoking each year in the world. it also does harm to the health of smokers and even non-smokers. about 3 million people die because of the diseases caused by smoking every year.
now, more and more people have begun to realize the harm of smoking. the total amount of world tobacco production has dropped from 14 billion pounds in 1990 to 7 billion pounds' in 1999. it is certain that more people will give up smoking in the near future.