而烟草又中含有的大量尼古丁对脑神经也有毒害，它会使学生记忆力减退、精神

而烟草又中含有的大量尼古丁对脑神经也有毒害，它会使学生记忆力减退、精神不振、学习成绩下降。调查发现，不吸烟学生的平均学习成绩远比吸烟的学生高。有关资料表明，吸烟年龄越小，对健康的危害越严重，15岁开始吸烟的人要比25岁以后才吸烟的人的死亡率高55%，比不吸烟的人高1倍多。

結果 (英文) 1:

And tobacco contain a lot of nicotine on the brain is also toxic, it will enable students to memory loss, depressed, falling grades. Survey found that nonsmoking students average higher grades than students who smoke. The data indicate that smoking is younger, more serious harm to health, who started smoking at age 15 than the mortality of people smoking after the age of 25 55%, 1 time much higher than people who do not smoke.

結果 (英文) 2:

The tobacco and contains a lot of nicotine on the brain is also poisonous, it will make students memory loss, lack of energy, poor academic performance. The survey found that the average achievement of students do not smoke than smoking students is high. The data indicate that smoking younger, more serious health hazards, the age of 15 than those who started smoking after the age of 25 smokers 55% higher mortality rate than non-smokers 1 times higher.

結果 (英文) 3:

While a large number of tobacco and nicotine containing also are toxic to the brain, it will make the students' memory, depressed, falling grades. The survey found that the average academic performance of students who do not smoke is higher than the students who smoke. Relevant data show that the younger the age of smoking, the more serious harm to health, 15 years of age to start smoking than 25 years after the death rate of people who only smoke high 1, more than 55% times the number of people who do not smoke.