用英语写一篇吸烟有害健康的文章
题目
用英语写一篇吸烟有害健康的文章
答案
Smoking is bad for people’s health.There are more than half people smoking in china,even though smoking is very bad,smokers become more and more.These smokers are younger and younger,even some studen...
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
最新试题
热门考点