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2. 污染问题：water pollution
3. 环境保护：protect..
4. 其他相关：......
二、.话题词汇（discuss and say them out with your deskmate）：
1. 生存环境：earth, water, air ,sea, land, planet,environment...
2. 污染问题：pollution, dirty, dust, green-house effect, sound pollution, air pollution, white pollution...
3. 环境保护：protect, save, keep, recycle, reuse, reduce, walk, turn off...
4. 其他相关：our duty, take action...
三、语言积累: fill in the blanks
（一）Environmental problems and reasons(环境问题和原因)：
1.根据括号内所给的中文提示正确拼写。
(1). The __________(污染) is getting worse and worse in the world.
(2). The river used to be clean, but now the bottom of the river is _______(充满着) of _________(垃圾)
(3). People often drive their c______ to work.
(4). _____ _______(更糟糕), they also pollute the earth.
(5). People use a large number of _______(塑料) bags everyday. People are _______(扔掉)those bags everywhere.
(6). The factory is _______(引起) a lot of pollution.
(7). It's not good to use p______ cups.
Answers: 1. pollution 2. full, rubbish 3. cars 4. What’s worse 5. plastic,throwing 6. causing 7. paper
（二）solutions（解决方法）:
1.根据句意及首字母或中文提示填写单词
To cut down air pollution
(1). I think we shouldn't smoke in p_______.
(2). We'd better take the bus or subway ______(代替) of driving.
To cut down water pollution
(3). Everyone should play a part in c_______ up the river.
(4). Let's stop factories from pouring w______ water into the river.
To cut down waste pollution
(5). We could _______(重复使用)the old things, such as old glasses bottles, old clothes and so on.
(6). We ______(应该) take a bag to go shopping. It can help a lot.