When can Alice play computer games?
A:On Saturday.
B:On Wednesday.
C:On Monday.
看图,选词填入四线三格中。
dog rabbit cat fish
如图,分别延长▱ABCD的边CD,AB到E,F,使DE=BF,连接EF,分别交AD,BC于G,H,连结CG,AH.
求证:CG∥AH.