材料在人类社会发展的历史进程中具有极其重要的作用，材料的发展也为科学技术的发展提供了物质基础，但材料的发展及大量使用也带来了不少的______和______问题．因此我们要用“可持续发展的观点”和“环境保护的意识”来开发和利用材料的各种特性，合理利用资源，有效地保护环境．
因为材料的获取基本都来源于自然界的地下资源、动植物等，所以大量的使用会使资源锐减，环境遭到破坏．
故答案为：资源，环境．
| 先通读下面短文，掌握其大意，然后从各小题所给四个选项中，选出一个最佳答案。 |
| I am sitting in an empty football field after my last high school football game that finished a few hours ago. I'm the mid-field player on my team. But in fact that's not (1) now. I was the mid-field player because, as I said, this was my (2) game. That's a good way to end a high school football career (生涯), especially if you win, but even though you don't, it's (3) to leave at a high point. I was eight when I first started playing football. My dad (4) football, and he used to practise with me at home — passing, catching, running. We used to practise almost every evening (5) it got too dark. He tried to teach everything he knew about the (6). "Just remember: don't ever (7)." "Stay in the game. Don't lose your concentration (专注).""Go out there and give 110 percent(百分之……)every time." Well, that was a long time ago, but I still hear his words (8) in my ears. I had a lot on my mind (9) the game today. I don't like things to end, I guess, and this was the last game. I was talking to myself and warning myself about what to do and not to do. I didn't sleep at all (10), and when the sun came up this morning, I reached the point where (11) just wanted it all to be over, finished, done. But then when the game started, my mind became (12). I just lived in this game, this moment. I didn't hear the crowd, I didn't feel the cold or the pain, I never felt tired. I just kept my eyes on the (13), and it was just me and the ball and, inside, a soft, white light (14) me the way to, and it was a beautiful, empty feeling. It's all over now, and it's really getting cold here. It's starting to snow. The sun's almost gone, and I can (15) see the goal. Now it's dark and I'm sitting here all alone. Well, I guess it's time to say good-bye and move on. |
| ( )1. A. true ( )2. A. first ( )3. A. good ( )4. A. needed ( )5. A. until ( )6. A. football ( )7. A. grow up ( )8. A. ringing ( )9. A. from ( )10. A. tonight ( )11. A. we ( )12. A. empty ( )13. A. way ( )14. A. sending ( )15. A. already | B. wrong B. last B. bad B. hated B. when B. game B. catch up B. saying B. before B. yesterday B. they B. full B. field B. teaching B. hardly | C. strange C. worst C. lucky C. missed C. unless C. goal C. give up C. falling C. through C. today C. I C. rough C. ball C. pointing C. never | D. clear D. favourite D. painful D. loved D. although D. score D. hurry up D. coming D. after D. last night D. he D. awake D. match D. showing D. clearly |