he wants a white hat{改成否定句}there is a ball on the floor.{改为复数句}
题目
he wants a white hat{改成否定句}there is a ball on the floor.{改为复数句}
答案
he wants a white hat{改成否定句}
He doesn't want a white hat.
他不想要一个白帽子.
there is a ball on the floor.{改为复数句}
There are some balls on the floor.
地板上有很多球.
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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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