Have not seen you for ages.Let us have a get-together next week.It is a_____.
题目
Have not seen you for ages.Let us have a get-together next week.It is a_____.
A bargain
B secret
C deal
D wonder
答案
C---DEAL
很多年没见了,我们下个礼拜聚聚吧,就这么定了.
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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