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第一课时
一、
1. There is not much coal on Earth.
2. We should use paper bags and glass bottles.
3. Wood comes from trees.
4. Too much plastic is bad for the Earth.
5. She comes from Jiangsu.
6. There are many plastic bags in the supermarket.
7. You made too many mistakes.
8. We should not use too many plastic bottles.
(1. B 2. C 3. A 4. A 5. B 6. C 7. A 8. B)
二、
1. We should not drive so much because cars use a lot of energy.
2. We should not cut down too many trees.
3. In many places, there is not much water. We should not waste water.
4. Too much plastic is bad for the Earth.
(1. T 2. T 3. T 4. T)
三、
1. energy 2. Earth 3. plastic 4. paper 5. reuse 6. waste
四、
1. save 2. use 3. useful 4. waste, reuse
五、
1. We use water to clean things every day.
2. Most of our energy comes from coal and oil./ Most of our energy comes from oil and coal.
3. We should not cut down too many trees.
4. Is too much plastic bad for the Earth?
第二课时
一、
1. He should not smoke in the restaurant.
2. They should not litter in the park.
3. They should not cut down too many trees.
4. They should not use too many plastic bags.
5. They should not talk in the library.
6. They should not throw the rubbish in the river.
(6 4 3 2 1 5)
二、 1. D 2. C 3. B 4. A
三、 1. B 2. C 3. A 4. C 5. B
四、 1. D 2. E 3. C 4. F 5. A 6. B
五、 1. comes from 2. should, protect, Earth
3. use, to make 4. should not cut down, many
第三课时
一、
1. Don’t use too much paper.
2. How can we reuse these things?
3. We use wood to make tables, chairs and many other things.
4. I can reuse a plastic bottle to make a toy.
5. The Earth is our home.
(1. F 2. T 3. F 4. T 5. T)
二、 1. A 2. B 3. C 4. B 5. A
三、 1. too many trees 2. much, many 3. our 4. me 5. fun
四、 using, to make, come from, clean, cut down, plant
五、 1. F 2. T 3. F 4. F
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