20.（ ）

(单选题)From the third paragraph we can infer ______. (单选题)What do we know about the Amundsen-Scott South Pole Station? (单选题)Why did the plane fly to the Amundsen-Scott South Pole Stati (单选题)What is their attitude towards each other? (单选题)What can we infer from the last paragraph? (单选题)Why did the fat man look like a tourist? (单选题)What can be a suitable title for the text? (单选题)What do we know about the man who took the violin away? (单选题)What can we learn about the lost violin? (单选题)New types of energy from the sun, wind and water are not exp