-- Hello! I am John.
-- ______
A:Hello! This is Kitty.
B:Hello! I am Lily.
C:He is Bob.
例如:衣橱里的樟脑丸变小升华,吸热.
-- Who did you meet home yesterday?
-- I met John.
7位同学中考体育测试立定跳远成绩(单位:分)分别是:8,9,7,6,10,8,9,这组数据的中位数是( )