[设计说明]

本环节旨在激发学生兴趣，培养观察分析问题能力，同时旨在鼓励开口，促进口语提高。

2. Group discussion:

Topic 1: about UFOs:

(1) What do the letters UFO stand for?

(2) Are they really from another planet? Why or why not?

(3) Do you believe in UFOs? Why or why not? What do you think might be the most acceptable explanation for UFOs?

(4) Can you show us more information you get about it?

Topic 2: about Yetis:

(1) Where is the Himalayas? What's the weather like there?

(2) Why do some people make great efforts to climb them?

(3) Have you ever heard of Yetis? What do Yetis look like?

(4) Do you believe there are Yetis? Why or why not?

(5) Do you think some climbers' disappearances are connected with Yetis?

(6) Show us more information you know about Yetis.

Topic 3: about crop circles:

(1) Where can we see these strange circles?

(2) What do they mean?