把They do the their homework in the evening改为一般疑问句,并作出肯定和否定的回答
题目
把They do the their homework in the evening改为一般疑问句,并作出肯定和否定的回答
答案
Do they do their homework in the evening?
Yes,they do .
No,they don't .
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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