关于大洲、大洋说法正确的是( )
A:亚洲是跨经度最广的大洲
B:大西洋是面积最大的大洋
C:非洲中部被赤道穿过
D:亚、非洲的分界线是巴拿马运河
cos30°=( )
关于发达国家城市化特点的叙述,不正确的是( )
-My parents our home for a few hours when I arrived. I didn't meet them.-You could call them if you wanted to know where they were.