介绍： 版权归原作所有，仅供此学习，若有侵权请告知删除。
[12:01.89]The last reading.
[12:04.79]Effects of Smoking
[12:07.37]For many years, scientists have warned
[12:10.63]that smoking tobacco is bad for your health.
[12:14.64]Yet people around the world continue to smoke.
[12:18.95]It is estimated that almost five-...

介绍： 版权归原作所有，仅供此学习，若有侵权请告知删除。
[12:01.89]The last reading.
[12:04.79]Effects of Smoking
[12:07.37]For many years, scientists have warned
[12:10.63]that smoking tobacco is bad for your health.
[12:14.64]Yet people around the world continue to smoke.
[12:18.95]It is estimated that almost five-million people around the world
[12:24.18]die each year from the effects of smoking.
[12:28.35]Smoking tobacco is the leading cause of lung disease.
[12:32.98]And it also has been linked to heart disease, stroke and many kinds of cancer.
[12:39.39]Scientists have identified more than 40 chemicals in tobacco smoke that cause cancer.
[12:46.85]Experts say smoking affects not only the smoker but also the people who do not smoke.
[12:54.36]For example, women who smoke during pregnancy
[12:58.07]are more likely to have babies with health problems.
[13:01.98]Besides, smokers may harm the health of family members
[13:06.67]and people at work when they breathe out smoke from cigarettes.
[13:10.84]There is no safe way to smoke.
[13:13.88]The best is to stop smoking completely although it is not an easy job.