nobody knew what would happen the ______(follow)day 1.she is very clever,she can work out the math
题目
nobody knew what would happen the ______(follow)day 1.she is very clever,she can work out the math
1.she is very clever,she can work out the maths problem_____(easy)
2.this book is ____(help)to us students
3.the girls started(dancing ) half an hour ago(对括号内提问)
___ ____the girls ____ ____ half an hour ago?
答案
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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