题目

“Cool”is a word with many meanings．Its old meaning is used to express a temperature that is a little bit cold．As the world has changed，the word has had many different meaning． “Cool”can be used to express feelings of interest in almost anything． When you see a famous car in the street，maybe you will say，“It's cool．”You may think，“He's so cool，”when you see your favorite footballer． We all maximize（扩大） the meaning of“cool”．You can use it instead of many words such as “new” or “surprising”．Here's an interesting story we can use to 假如要给地球做一件外衣，所需要的布料不少于( )A. 5.1亿平方千米 B. 5.1平方千米 C. 4万千米 D. 4万平方千米