临床体温是指机体深部的（）
参考答案：平均温度
小芳1分钟内共投篮75次，且投进45个球，则小芳进球的频率为______．
― My sister bought me a new MP4 player, but I don’t know .
― Let me show you.[ ]
A. what to use
B. which one to use
C. how to use it
D. where to use it
