问题
选择题
--I visited the Purple Mountain Observatory last Sunday.
---__________ Why didn’t you tell me earlier?
A．Have a good time.
B．I hope so.
C．You did?
D．It’s kind of you.
答案
答案：C
题目分析：句意：我上周日参观了紫金山天文台。真的？你为什么不早点告诉我？A玩得开心，B我希望如此，D你太友好了。根据题意选C。