all things we should remember them while shopping online.

　　答案：

　　With the development of the Internet, many people are used to shopping online. It become a fashion in our daily life. Some of students also show great interest in it.

　　Shopping online has many advantages. Just by a click of the mouse, you can buy you're interested in going outdoors. You can avoid tired and being trapped in the crowded people and heavy traffic and save time. When shopping online, you can choose from many of goods, whose prices are generally lower.

　　Every coin has two sides. Its disadvantages are obvious, too. On the one hand, it's very easy for you to buy goods from the pictures you see on the Internet. On the other hand, shopping online people to buy goods that are not badly needed. That's waste of money. These are all things we should remember while shopping online.

　　难项分析：

　　第三处：how→what　考查名词性从句的连接词。分析句子结构可知，此处应为连接词引导宾语从句，且在从句中作介词in的宾语，表示"所......的"，故应用what。

　　第六处：variety→varieties　考查名词的复数。此处指很多种类的物品，且前有many修饰，故应用名词的复数，varieties of "许多"。

　　第十处：去掉remember后的them　考查定语从句。此处为省略了关系代词的定语从句，关系代词在从句中作动词remember的宾语，them多余，故去掉them。