They went to school at half past six this morning (该成一般疑问句并回答)
题目
They went to school at half past six this morning (该成一般疑问句并回答)
答案
Did they go to school at half past six this morning?
Yes,they did.(No,they didn'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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