but with the rapid development of technology and information,brand new ones will soon be out of date
题目
but with the rapid development of technology and information,brand new ones will soon be out of date.3896
答案
随着技术和信息的飞速发展,最新的产品也会很快被淘汰.
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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