英语 He is very busy,he exercisses in his free time(用although把两个句子连成一句）
题目
英语 He is very busy,he exercisses in his free time(用although把两个句子连成一句）
答案
although he is very busy,he exercisses in his free time
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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