若A、B、C三点在同一直线上,且AB=5cm,BC=3cm,那么AC=( )cm.
8或2
The small sheep ____________ white and lovely, I like them very much.
A. is
B. are
C. were
下列天气现象中,目前仍保留观测和记录在天气现象栏的有()。
A.雷暴
B.龙卷
C.雪暴
D.浮尘