南、北半球的分界线是（ ）
A．30°N
B．赤道
C．30°S
D．20°W、160°E
Ｂ
本题主要考查的是地球的相关知识。南、北半球的分界线是赤道。
-Jack，I haven’t seen your brother for a long time.
-He ___________ Shanghai on business for two months.[ ]
A. went to
B. has gone to
C. has been in
D. has been to
夏季生产中，车间内可穿短袖工作服。
