他们通常在下午跳水.肯定句 否定句 疑问句 答句 特问句对跳水提问.
题目
他们通常在下午跳水.肯定句 否定句 疑问句 答句 特问句对跳水提问.
答案
They often go diving in the afternoon.They do not go to diving in the afternoon.Do they often go diving in the afternoon?Yes,they do.What do they often do in the afternnoon?
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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