某人面北而立,前面为温带后面为热带,左边为东半球右边为西半球,此人的位置是( )
A:23.5°N,0°W
B:66.5°S,160°E
C:23.5°N,160°E
D:23.5°S,20°W
要使正五角星旋转后与自身重合,至少将它绕中心顺时针旋转的角度为____度。
—I think buyers________ spend too much time going to shops.