A:①地属于中纬度地区
B:②地位于①地的正南方
C:②地属于北温带
D:①②两地均位于东半球
已知平面向量a→与b→的夹角为60o,且满足(a→-b→)·a→=0,若a→=1,则b→=( )
— How long can I _____ the English workbook?
— For two weeks.
I still remember my happy childhood when my mother ________ take me to Disneyland at weekends.