根据对话内容，从对话后的方框中选出适当的选项补全对话。
A: Hello, You look happy. ____
B: I went to China with my sister, Alice as exchange students.
A: Really? Wow! ____
B: I go to China once a year.This time we went to Jiangyou, sichuan.
A: ____?
B: Yes, we watched Middle Autumn Evening Party called The Round Moon of Jiangyou. .
A: Oh, Why it was held in Jiangyou? How was it?
B: Because it's Li Bai's hometown. Many stars joined in the party, such as Hua Chengyu.
A: Great, Hua chengyu, what is he like?
B: Well, ____.
A: Thanks very much.
B: You are welcome.
A. How often do you go to China? B. Why did you go there? C. Where did you go on Middle Autumn Day? D. He is quiet, but he is special. E. Did you do anything interesting? |
且y＝－x2＋1，若
则t的值为 ( )