求一篇英语作文，急急急

It is almost known to all that smoking is bad for people‘答凳铅粗袭s health. Scientific researchs show that smoking can lead to heart disease,cancer and other problem.The World Health Organization says diseases linked to smoking kill at least two million five-hundred-thousand persons each year.
　Still,many people find it difficult to stop smoking.One reason is that smoking usually becomes a habitual behaviour,and habits,whether good or bad are not easy to be given up.Another reason is the effect of nicotine,the substance found in cigarettes works on people somewhat as drugs do.

　　Measures have been taken to help people keep away from the harm of smoking. In many cities,smoking is forbidden in public places.The danger of smoking is warned of everywhere.And newspapers are asked not to publish advertisements for cigarettes.World "No Tobacco Day" is observed every year as the biggest compaign against smoking.
祝学习进步！清好

Cigarette smoking is a health hazard already is well known as fact. Different cigarettes when lit the release of chemical material are different, but the number of main tar and carbon monoxide and chemicals. Lit cigarettes produce harmful material can be divided into six types:

(1) aldehydes, nitrides, olefins class, these substances on respiratory a stimulating effect.

(2) the nicotine class, can stimulate sympathetic nerve, cause the vascular intima damage.

(3) amine class, cyanide and heavy metal, these belong to the toxic substances.

(4) styrene-acrylic pyrene, arsenic, the cadmium, methyl hydrazine, paracetamol and other radioactive substances. These material all has the effect that cause cancer.

(5) phenolic compounds and formaldehyde, these matter has accelerated cancerous role.
小盆友，抄作文是不好的行为，要岩友激此好好学习自己写出很棒的作粗铅槐文呦