The ______ of two people is the one who was born first.
A:younger
B:elder
C:taller
读“地球自转的线速度和角速度图”(如图所示),A点位于北纬30°,B点位于南纬30°.据此回答下题.
— What a good ___________ you've given me! Thanks a lot.
— My pleasure.