A:You have a headache.
B:Maybe you have a fever.
C:You should see a dentist.
如图中,A﹣﹣E示意人体的不同结构层次,请据图分析回答下列问题.
Are there____(some)books in your classroom?
一组数据﹣1,3,1,2,b的唯一众数为﹣1,则这组数据的中位数为____