health(seeing a doctor ,expressing problems and giving suggestions)
题目
health(seeing a doctor ,expressing problems and giving suggestions)
以Dialogue形式,约300个单词,
答案
Joan;Hi,Sam,how are you S;Not so good ,I have a terrible cold.J;Really?That is too bad!You should be at home in bed .And have you taken anything for it?S;No,I have not.J;Oh,you should see a doctor .S;...
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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