About 200 teenagers -----------the speech competition and my brother won the first prize
题目
About 200 teenagers -----------the speech competition and my brother won the first prize
A, attende to B,took park in
请问选哪个呢,这两个词组好像意思一样哦,请解释一下哈,谢谢
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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