A.Avoid eating any food.B.Prepare the right type of pie to eat.C.Wash his hands thorou

外语类 公共英语 已帮助 人

A.Avoid eating any food.

B.Prepare the right type of pie to eat.

C.Wash his hands thoroughly.

D.Practice eating a pie quickly.

热搜:a是b的充分条件,b是a的必要条件吗