英文作文:I lost my wallet
题目
英文作文:I lost my wallet
答案
When I went shopping with my friend Lucy,I lost my wallet in the supermarket.I was worried and looked for it everywhere.But I still couldn't find it.When I wanted to give up and went back home with my friend.I heard there was a sound looking for the loser in the supermarket broadcast.I was very happy and went to the lost and found.It was really my wallet.I was very grateful.If the world has more kind people,it will become more and more beautiful.
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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