根据所给英语提示语,写一篇小短文.
题目
根据所给英语提示语,写一篇小短文.
提示词：shopping online,popular,search the internet,find information,make a decision,receive,save time ,too expensive ,computer technology,develop,life
答案
Shopping online has become more and more popular recently.
People can search the Interenet to find enough information,then make a decision what to buy.They can receive what they order online at home some time later.
It has several advantages over traditional shopping.For example,people can save time,and won't buy something too expensive.
In this way,computer technology develops so much that it helps to make our life easier and more convenient.
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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．
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