Ⅰ. 用本单元恰当的单词补全语境
1. advocate improvements 提倡改善
2. have a commitment like yours 承担和你一样的义务
3. put up with pollution 忍受污染
4. the growth of the greenhouse gas 温室气体的增加
5. leave an electrical appliance on 让电器开着
6. circumstances beyond control无法控制的情况
7. refresh your spirit 使你神清气爽
8. be an educator 做一个教育者
9. the presentation of one’s ID card显示某人的身份证
10. a growing tendency 增长的趋势
11. come into existence 存在, 产生
