世界无烟日英语作文：smokingisharmfulandhealthy"

　　a small smoke, endanger ten thousand myriad. smoking is equal to prodigal oneself health, shorten oneself life. smoking is harmful and healthy 　

　　" smoking is harmful and healthy " 　

　　this is how clear caution, how well-meaning advice! cigarette resembles " invisible killer " , it is in casual a health that damages you, gobble up your life. there also is such person beside us, know perfectly well smoking ill health, but he still smokes. do you know 　 ? in the aerosol of the generation when smoking, have a variety of 3000 harmful material. endanger among them the biggest is nicotine. tar and carbon monoxide. the nicotine in a smoke is ok kill with poison a small white rat. absorb 40-60 milligram nicotine the person dies possibly. the person that smokes for a long time suffers from chronic tracheitis easily. coronary heart disease, suffer from even on lung cancer. tar is nicotian flaming child, among them a variety of cancer make thing. the harmful material in cigarette body can enter their body insensibly, the neurological, respiratory system that destroys them. if be mixed for a long time cigarette " intimate contact " the immune force that can reduce human body, make memory drops likely still. the nicotine in cigarette has direct destruction to vitamin c action, because of smoking may prevent human body to be absorbed to it. if human body is long-term devoid vitamin c, get likely scorbutic. 　 did not smoke again please! a small smoke, endanger ten thousand myriad. smoking is equal to prodigal oneself health, shorten oneself life. let us have a smokeless beautiful season! 

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