in the world.

　　Antarctica is also 5 . There are huge glaciers and ice everywhere. A glacier is an area of ice that 6 slowly. The ice and glaciers are beautiful. But most plants and land animals cannot 7 on the ice. There are no trees, no rivers, and no cities in Antarctica. Only penguins and other sea birds live there.

　　Antarctica does not 8 any one country. 9 ， every country owns Antarctica. More than twenty countries have stations in Antarctica. A station is a place where scientists do experiments. The 10 are the only people who live in Antarctica.

　　Life on an Antarctica station is 11 . It is like life on a space station. The sun shines for six months, and then it is 12 for six months. People usually have problems with sleeping and eating. They eat more 13 they are not busy. In an emergency, it is hard to get 14 . Once, an American doctor Nielsen realized she was 15 . She had cancer. It was winter, and airplanes could not 16 in Antarctica. Dr. Nielsen had no choice but to 17 . An airplane dropped medicine to her, and she 18 herself. Several months later, Dr. Nielsen 19 to the United States to get special medical help.

　　Today, ships go to Antarctica during the summer months from November to February. People want to 20 this unusual place, but they don't want to live there!

　　1．A.strange B．flat

　　C．terrible D．unique

　　解析：选D　由上文中的"like no other place in the world"可知，南极洲不像地球上的其他任何地方，它非常"独特(unique)"。

　　2．A.greatest B．cleanest

　　C．coldest D．worst

　　解析：选C　由下文中的"The temperature is sometimes－125°F(－87℃)"可知，南极洲是世界上"最冷的(coldest)"地方。

　　3．A.sun B．air

　　C．water D．food

　　解析：选A　由该空前的"the coldest months"可知，八、九月份是一年中最冷的季节，因为那时没有"太阳(sun)"。

　　C．rises D．drops

解析：选B　由上文中的"very strong winds"可知，南极地区有强风，风"刮(blows)"