学校要从五年级200名同学中抽出80名同学组成花束方队，编导老师对这200名同学的身高进行了统计。他应以身高的哪部分数据来抽取学生，方队比较整齐？[ ]

A．平均数    

B．中位数    

C．众数

___I don't think he is studying English in his room now.

____Oh, _________?

A．does he

B．doesn't he

C．is he

D．isn't he