绿色开花植物形成果实和种子，必须经过的两个生理过程是（ ）
人类活动中可以调节气温增加降水量的是( )
A. It's a naughty bird.
B. She is a cute girl.
C. The boy is very clever.
D. It's a cute elephant.
E. The teacher is very nice.
