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有一位教师在讲商品知识课时说过这样一句话:吸烟莫如品茶,很耐人寻味。 卷烟是一种特殊商品,对人体不但不能提供营养,反而有损健康。这是因为烟叶中含有一种有毒成分——尼古丁。把一包烟中的尼古丁提纯后能杀死一头牛;将两包烟中的尼古丁提纯后注入人体,即会致人死亡;如果一次吸得过量,就会引起尼古丁中
There is a teacher in the commodity knowledge class said such a sentence: smoking tea, very intriguing. Cigarette is a special commodity, not only can not provide nutrition to the human body, but detrimental to health. This is because tobacco contains a toxic component - nicotine. Nicotine in a pack of cigarettes purified to kill a cow; the two packs of cigarettes in the purification of nicotine injected into the body, it will cause death; if once suck over, it will cause nicotine