英语短文 吸烟的危害 100-120字
题目
英语短文 吸烟的危害 100-120字
答案
Smoking is Harmful It has been estimated that smokers have made up half of the population in China.And the smokers are becoming younger and younger,even ineluding some middle school students.
Nowadays more and more people have realized smoking can do harm to people'shealth.However,some people still enjoy smoking.Why?Because some of them think it is a kind of fashion,some think it is of GREat fun and others,think that smoking can refresh themselves.
In fact,smoking is a bad habit.It can cause a lot of diseases.Meanwhile smoking is a waste of money.Besides,careless smokers may cause dangerous fires.Smoking is harmful and it is not only bad for smokers themselves,but also bad for non-smokers.Therefore,I hope all the smokers can give up smoking for themselves and also for the people around them.
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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