Do you want to know ?A. what does it needB. what it needsC. it needs it needD. what need

问题补充：

Do you want to know ?

A. what does it need

B. what it needs

C. it needs it need

D. what need

答案：

A. what does it need

(答案→)B. what it needs

C. it needs it need

D. what need

解析：考查宾语从句。句意“你知道它需要什么吗？”宾语从句用陈述句语序。排除A，C项没有引导词；D项缺少主语，故选B。