I_____this book_____interesting.
题目
I_____this book_____interesting.
A.don't think;does
B.doesn't think:is
C.don't think;is
D.think;doesn't
答案
C 我认为这本书没意思.
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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