Shopping on the net is more and more popular. Taobo is Asia's largest retail (零售的) network

问题补充：

Shopping on the net is more and more popular. Taobo is Asias largest retail (零售的) network platform, people can buy and sell many kinds of things.

A. which

B. where

C. what

D. whose

答案：

A. which

(答案→)B. where

C. what

D. whose

解析：原句意思是网上购物越来越流行。淘宝是亚洲最大的网络零售平台，在那里人们可以买卖很多不同种类的东西。分析句子结构，其中包含了一个非限制性定语从句。定语从句中关系词的确定，要看它在定语从句中作什么成分，这里作地点状语，故选B。