英语作文：我的爱好.60个词
题目
英语作文：我的爱好.60个词
答案
I like doing sports and reading in my free time.My favorite sport is basketball.I often play basketball with my classmates after school and play with my friends on weekends.I like playing basketball b...
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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