Helen,will you be at the party tonight?Yes,but I have so much homework to do that I really ___
题目
Helen,will you be at the party tonight?Yes,but I have so much homework to do that I really ___
A.can’t
B.mustn’t
C.won’t
D.shouldn’t
答案
D.shouldn't
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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