2.Zhongdian was called Shangrila officially ________. A.before 1933 B.in 1933 C.before 1997 D.after 1997 3.Why do the lakes in Shangrila look like diamonds? A.Because they are surrounded by grasslands. B.Because they are covered by grasslands. C.Because there are some towers on the grasslands. D.Because people like talking about them.