写一篇100字英语作文 Do you have a cold
题目
写一篇100字英语作文 Do you have a cold
答案
Everybady has a cold sometimes .When you have a cold ,you shouldn't ,too much .You should drink lots of water .You should go to see a doctor and take some medicine .You shoul...
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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