(二)Dear Peter, How is your trip to Sun Moon Lake?My family and I are at Wuling Farm. It is a famous vacation spot.There are a lot of flowers and fruit trees here. Some people are hiking. Some people are having apicnic. Right now I’m sitting under a cherry blossom tree. The flowers at Wuling Farm are reallybeautiful. By the way, there are some shops around here. And my mother is buying gifts. We arehaving fun here.                                                        Your friend,                                                                 Sam
31.What’s the main idea(主旨) of this reading?
(A) Sam’s mother is buying a lot of gifts at Wuling Farm.
(B) The cherry blossom trees are beautiful at Wuling Farm.
(C) Sam writes a letter to tell Peter something interesting(有趣的) at Wuling Farm.
(D) Peter is having fun at Sun Moon Lake.