2024年3月16日发(作者：)
Unit 11
11A A Precious Resource
Before You Listen
A. 1. c 2. a 3. b 4. b
B. b
Listening Comprehension
Part One
A. 1. b 2. a 3. d 4. d 5. c
B. 1. vital not only to the local people but also to countless species of
plants and wildlife
另外，周围46000英亩湿地也已经消失。这些湿地不但对当地居民，而且对附近无数
种植被和野生生物都至关重要。
2. face the same dilemma that has confronted the people of Spain; balance
human needs with the requirements of natural systems that are vital for sustaining
life
本世纪，许多国家都将面临西班牙人民的困境：如何平衡人类需求与自然环境需求之
间的关系，而后者对维持地球生命可持续发展起至关重要的作用。
3. estimated 1.2 billion people drink unclean water; 2.5 billion lack proper
toilets or waste disposal systems; die each year from diseases related to unclean
water
现如今，据估计有12亿人的饮用水不洁净，大约25亿人没有合适的冲水厕所和污水
处理系统。每年有超过500万人因饮用不洁净的水而死于相关疾病。
Part Two
1. Repaired water pipes; replaced toilets; installed water meters; changed
wasteful showers and water taps.
2. To prevent water being wasted.
3. He installed tanks in homes and apartments to provide 190 liters of
water a day free to each household.
4. Water recycling.
5. Water conservation is the most effective method to address water
shortages.
After You Listen
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