【2008.10】In terms of electronic devices，it’s easy to buy exactly

【2008.10】In terms of electronic devices，it’s easy to buy exactly ______ you need in a big city．
A、that
B、those
C、what
D、which
【正确答案】：C
【题目解析】：本题考查的是宾语从句中连接代词what的用法。