根据对话情景选择恰当的选项，其中有两项是多余的。

A: Hi, Zhou Jun, where did you go last week?

B: 小题1: 

A: Where is Hangzhou?

B: It’s in Zhejiang, the south of China.

A:小题2: 

B: It’s famous for Leifeng Pagoda, Bainiangzi, Linyin Temple and especially West Lake.

A: Do many people go there to enjoy their holidays every year?

B: 小题3: 

A: How long did you stay there?

B: 小题4: 

A: Did you take a lot of photos?

B: Certainly. We also had some delicious food. 小题5: 

A: What an exciting trip! I’ll go there one day.

A．And we had a very wonderful time.

B．Yes, they do.

C．I went to Hangzhou with my friends.

D．In two days.E. What is it famous for?

F. For two days.

G. Yes, they will.

一平面简谐波沿x轴正方向传播，波动方程为，该波在t=0.5s时刻的波形图是（）。

A．A

B．B

C．C

D．D