If I become a policeman,will I be happy?英语作文 从好的一面,和坏的一面写,初二的水平80词
题目
If I become a policeman,will I be happy?英语作文 从好的一面,和坏的一面写,初二的水平80词
答案
If I become a policeman,will I be happy?Becoming a policeman may be many people's dream at a very young age.If I become a policeman,I will be able to help a lot of people in need.I will help people to...
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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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