Tom has some questions in his homework. He often____help?
题目
Tom has some questions in his homework. He often____help?
选择1go for a walk 2every twenty minutes 3in the countryside 4asks for 5geet off 6take part chat 7most of the time 8haveschool 9middle school
We don't______this Sunday.Shall we go fishing_________?
答案
选4
补充问题也是从上面选吗?那就是8,3
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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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