Mr. Li will go to Guangzhou by air. His workmates are ______ at the airport.
A:turning him off
B:seeing him off
C:taking him off
D:putting him off
19世纪中叶英国成为世界上经济最发达的国家,这主要得益于17世纪爆发的资产阶级革命和l8世纪开始的工业革命,请回答:
读地球仪图,回答下题.