2014英语四级听力练习慢速4.15(2)_大学英语听力

2014英语四级听力练习慢速4.15(2)

　　From Learning English, this is Science in the News.

　　Im Anna Matteo.

　　And Im Christopher Cruise.

　　This week we talk about smoking -- a preventable cause of cancer.

　　This year, the United States marked the 50th anniversary of the governments first report on smoking and health. The then-Surgeon General -- Luther Terry -- wrote that first report. It linked cigarettes to lung cancer and heart disease. The year was 1964. At that time, more than 40 percent of Americans smoked. Today, about 18 percent are smokers.

　　Anti-smoking measures save lives in the U.S.

　　The report led to anti-smoking measures, including a requirement to place warnings on cigarette packages. The government also banned television and radio advertisements for cigarettes.

　　American medical researchers say anti-smoking measures have saved 8 million American lives since 1964. But cigarette smoking still kills about 443,000 Americans every year.

　　Dr. Joanna Cohen heads the Global Tobacco Initiative at the Johns Hopkins School of Public Health. She says the surgeon generals report has had a real effect on Americans.

　　And it really led to a reduction in use and a great increase in knowledge of the harmful effects of tobacco products.

　　?In the United States, laws now restrict tobacco use, including the sale of cigarettes to individuals under the age of 18. Laws also protect non-smokers from breathing smoke-filled air. Many cities have banned smoking in public spaces like restaurants, bars and even outdoor areas. Anyone visiting New York Citys famous Central Park may receive a fine for lighting up a cigarette.