完成对话，从方框中选择正确选项，其中有一个选项与对话内容无关。

A. I don't know. B. Why are you so excited? C. What will they do there? D. How long will they stay there? E. I'm looking forward to the lectures. F. They're Chen Dong, Liu Yang and Cai Xuzhe.

He Wei: Hey, Liu Jun.

Liu Jun: Hi, He Wei.

He Wei: Because Shenzhou 14 was sent into space successfully.

Liu Jun: It's reported that three astronauts (宇航员) have been carried into space.

He Wei: You're right.

Liu Jun: How great they are!

He Wei: Hmm, for six months.

Liu Jun:

He Wei: They'll do a lot of work, such as completing the Tiangong space station and so on.

Liu Jun: Wow! Will they give us any space lectures (讲座)?

He Wei: That's right.

Liu Jun: Me too.