将8.5,8.0,8.3,6.0,8.2,8.0,9.0按去掉一个最高分和一个最低分计算平均分是( )
A:8.0
B:8.2
C:8.3
D:8.5
补写出下列句子中的空缺部分。
-- Mum, I have nothing to do in my free time but do homework.
-- My dear, you should ___ a hobby like drawing or taking photos.