Smoking and Cancer
1．吸菸對健康有害。
2．吸菸易患癌症。
3．世界各國政府應採取嚴厲措施限制吸菸。
Smoking is harmful to the health of people . It not oilly pollutes air，brings about sufferings of other people such as children and nonsmokers，but also causes diseases of
bronchitis，lung cancer，chest cancer and throat catcer．
Smoking is associated with cancers．Smoke is a mixture of gases，vaporized chemicals，minlute particles of ash，and other solids．There are also tar and nicotine，which are
powerful poisons．As the smoke is breathed in，all these components from deposits the
membranes of the lungs．One point Of concentration where air tube，or bronchus divides．Most lung Cancer begins at this point．
World governments should conduct Seriou campaigns against smoking．First，legislative step must be introduced．Second，restrictions on cigarette advertisements must be imposed．Third，public smoking in certain places such as theatres，cinemas，waiting roms at airports and railway stations should be banned．In this way，we may make the smokers feel increasingly uncomfortable about their bad habits．finally，cigarette price should be booste
吸菸對人們有健康有害。吸菸不但污染空氣，給他人帶來痛苦，譬如給孩子及不吸菸者帶來痛苦，而且還引起支氣管炎、肺癌、胸癌和喉癌。
吸菸與癌有關。煙是一種混合物，其中有氣體蒸發的化學物質、微細的煙塵顆粒和一些固態物質。煙里有焦油和尼古丁，這兩種東西毒性很大。煙吸人肺里，所有這些成分沉積在肺部的黏膜上。集中的一點就在支氣管分叉處。大多數癌症就是由此處開始的。
世界各國政府應發起一場禁菸運動。首先，應採取立法措施。第二，嚴格限制刊登香菸廣告。第三，禁止在某些公眾場所吸菸，譬如，不許在劇場、影院、候機廳和候車吸菸。這樣，我們就會使那些吸菸者對他們的壞習慣逐漸感到不舒服。最後一點是，應提高香菸價格。