--How ____ do you play soccer?  --_____

A．long, two times a week

B．often, twice a week

C．many, twice

D．often, twice time a week

《餐饮服务食品安全操作规范》对食品冷冻的温度范围要求是（）。

A、-18~-1。C

B、-20~0。C

C、-20~-1。C

D、-18~0。C