my school 英语作文
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my school 英语作文
答案
My schoolMy school is beautiful,there is a great playground and a library,there are a lot of flowers,you can hear the birds are singing in the morning!I came to school every day,can hear a model LangL...
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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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