选择一个英语单词
题目
选择一个英语单词
Sam said to me ,"Don't give up the hope before you really try hard.==>Sam told me not to give up the hope before I really ( ) hard.
希望有解析A try B tried C Trying D not to try
答案
B
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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