阅读理解。 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 show the way the word is used. A teacher asked her students to write about the waterfall (瀑布) they had visited. On one student's paper was Just the one sentence, 'It's so cool. Maybe he thought it was the best way to show what he saw and felt. But the story also shows a scarcity (缺乏) of words. Without 'cool', some people have no words to show the same meaning. So it is quite important to keep some credibility (可信性). Can you think of many other words that make your life as colourful as the word 'cool'?  I can. And I think they are also very cool. 1. We know that the word 'cool' has had _____. [     ] A. only one meaning B. no meanings C. many different meanings D. the same meaning 2. In the passage, the word 'express' means '_____'. [     ] A. see B. show C. know D. feel 3. If you are _____ something, you may say, 'It's cool.' [     ] A. interested in B. angry about C. afraid of D. unhappy with