when did he|when will he go to 新概念一96课造句,做好用上新概念一96课下面的单词
题目
when did he|when will he go to 新概念一96课造句,做好用上新概念一96课下面的单词
答案
When did he go to Athens/Berlin/Bombay?
When will he go to Rome/Sydney/MOscow
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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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