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as the derverlopment of science,it is convinence for Internet to our life.we can shop what we want in internet. online shopping can save time to do what we want,you can find something that can pay lower price. but onlione shopping exict a lot of problems.a lot of things that are low price and nice,so you will pay much more to buy them.when you lost cthroll youself in the interner,you will fall. in my oppion,when we surf the Internet,we should keep phsically attinude.