关于南亚的地形区,说法正确的是( )
A.中部高,南北低
B.指印度半岛及中南半岛
C.自南向北逐级降低
D.北部是喜马拉雅山脉,中部是恒河平原,南部是德干高原
答案:D
简述钢丝绳的构造及优点?
Just a month before the earthquake the school practiced an emergency drill showing the children how to __________ find their “safe place”.
A.calmly
B.regularly
C.automatically
D.specially