Bundanoon,a town in Australia,has decided to ban the sale of bottled water because of the influence
题目
Bundanoon,a town in Australia,has decided to ban the sale of bottled water because of the influence onthe e____.
答案
environment
禁售瓶装水,是由于采水对环境的影响.
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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