Antarctica is the highest continent on Earth，with the coldest temperatures anti the most wind．People have never wanted to live there because it is so cold．The（A）_________ temperature once was －89.2℃! But now scientists from all over the world come to study the ice．They want to（B）learn more about the Earth's history．

Some scientists live on Antarctica for part of the year．But they don't usually stay there for more than six months．Why? There are six months of light and six months of darkness .

Antarctica usually has a good deal of fine weather（C）_________any wind at all．The strong winds are usually only in seine parts of it. It is also interesting to learn that it isn't very wet there（D）There is very little snow or rain．It snows on the ice Ill winter，but at other times Antarctica is dry，just like the Sahara Desert

    In winter the sea around Antarctica （E）changes into ice for thousands of kilometers．But scientists tell us that（F）地球在变暖．So in future，there may be less ice ill the Antarctic sea When that happens．our weather will never be the same again．

1．分别在A和C的空白处各填入一个适当的词：

2．写出可以替换划线部分B和E的同义词或近义词：

3．将划线部分D改写成__________  __________ snow or rain alot．

4．将划线部分F译成英语

5．写出能说明本文主旨大意的中心词语：

1、1．lowest，without

2．Know，freezes

3．It doesn't 

4．the Earth is getting warmer

5．Antarctica