A:0°经线
B:0°纬线
C:180°
D:45°纬线。
世界上种族成分最复杂、号称“世界人种大熔炉”的大洲是( )
下列不属于人种划分依据的是 ( )
This is the first time that a woman ________ to the post of sales director in this company. ( )