— How was your summer camp in Dalian last year?
— ________. I had a good time with my friends.
A:Difficult
B:Not good
C:Wonderful
D:Expensive
新中国成立后,我国在少数民族聚居地实行____制度,后来又为缩小东西部差距,促进西部地区的发展,开始实施____战略。
材料一:“天下转漕,仰此一渠。”
材料二:北通涿郡之渔商,南运江都之转输,其为利也博哉!
材料三:见下图
请回答: