A:Having a birthday party.
B:Doing some exercise.
C:Getting Lydia a gift.
关于地球的第一宇宙速度,下列说法正确的是( )
对孟德尔选用豌豆做实验材料并获得成功的原因,下列解释中不正确的是( )
——How do you fee1 about the new film?—— I don't like the end.