急用!thanks.
题目
急用!thanks.
把下面句子改为一般疑问句
We are middle school student.
Children should help parents to do some housework.
I can paly the piano.
Simon likes palying chess.
The students paly basketball on the playground.
答案
1.are you a middle student?
2.should children helpvparents to do some housework?
3.can you paly the piano?
4.does Simon like palying chess?
5.do the students paly basketball on the playground?
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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