为了保护草原生态系统,我国于1985年颁布了《草原法》.草场的不合理利用,一般表现在( )
A:破坏草原植被
B:不合理的开垦
C:过度放牧
D:以上都是
My are big.
Changes in our school
Number(in the past)
Number (now)
Classrooms
12
60
Students
590
1280
Library
0
1
Teachers’offices
6
15
Computer rooms
3
例:There were only 12 classrooms in our school, but now there are 60 classrooms.
历史图片是生动鲜活的历史事件的实景再现。 右图反映的历史事件是( )