专题二十一　信息归纳

　　A

　　In simple words,secondhand smoke is smoke that a non-smoker breathes in from a smoker.Most of us know this as passive smoking.We see people who are very happy about the fact that they don’t smoke and how they have saved themselves from one of the most common and dangerous addictions.However,secondhand smoke is just as dangerous as active smoking.

　　Short term effects of smoking are usually observed in a few weeks of exposure to regular passive smoking.One of the earliest observed short term effects of smoking is that teeth will change color and the sense of smell reduces.That teeth change color is however observed only in active smokers.Due to chemicals that cause early aging,you might observe wrinkles as the initial sign.Your breath will smell due to the constant passing of smoke.It also affects eyes and they might water a lot along with frequent blinking (眨眼).Short term effects of smoking indicate that smoking is affecting your body.

　　A lot of long term effects of smoking in general are highly dangerous and may even result in death.One of the most noticeable dangers of secondhand smoke is that secondhand smokers can have cancers.Smoking causes not just one but many cancers including cancers of the kidney,nose,stomach and liver.

　　Secondhand smoke also has many effects on women who are in a family way.An expecting mother can pass on a lot of the poisonous particles to her unborn.

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