China has taken some important atepa to deal with its need for more energy and cleaner air
题目
China has taken some important atepa to deal with its need for more energy and cleaner air
答案
中国采取了一些重要手段来处理解决它的能源和清洁空气的需求问题.
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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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