二、完形填空。
The recycling centre is good for the environment. It 1 old things into new things. It saves resources and 2 our Mother Earth. Last month, my class visited a recycling centre near 3 school and learned a lot about it. Now I want to tell you something about this important 4.
First, trucks collect waste from recycling bins every morning. Workers check the recyclable rubbish carefully and pick 5 the wrong rubbish. Next, workers clean recyclable things. Then they put them 6 long conveyor belts (传送带). They sort the things into four 7: paper, plastic, glass and metal. Then, some machines cut plastic and cardboard into small pieces. 8 machines wash dirt and stickers off plastic bottles with warm water. Now the rubbish becomes useful materials. Workers put materials of the same type into large bundles (捆). 9, the centre sells these bundles to different factories. The factories use these materials to 10 new things. We can buy and use these new things to go green.
() 1. A. puts B. turns C. looks D. takes
() 2. A. helps B. cleans C. loves D. studys
() 3. A. we B. us C. our D. ours
() 4. A. place B. places C. place’s D. places’
() 5. A. in B. out C. up D. off
() 6. A. in B. at C. on D. for
() 7. A. lessons B. groups C. projects D. places
() 8. A. Other B. Another C. Others D. The other
() 9. A. Last B. Finally C. First D. Next
()10. A. change B. become C. make D. turn

三、阅读短文,选择正确的选项。
Each of us has a carton of milk every day at school. What does that mean? We use a lot of milk cartons every day! But many of us just throw them away and this wastes resources (资源).
Milk cartons have three parts: paper, plastic and metal (金属). Each part can turn into something new. The paper turns into newspaper and notebooks. Plastic and metal become shoes and cans.
Here are three steps to recycle a milk carton. First, open the carton and wash it with water. Second, make the carton flat (平的). This helps it dry quickly. Third, put the carton in a recycling bin. After some time, a truck will take the carton to the recycling centre. There the carton gets a new life!

Recycling is like magic. It turns old things into new things.
()1. Why is throwing milk cartons away a bad thing?
A. Because it wastes much money.
B. Because it wastes resources.
C. Because it makes the room dirty.
D. Because it pollutes the air, soil and water.
()2. Which of the following is NOT a part of a milk carton?
A. Paper. B. Plastic. C. Glass. D. Metal.
()3. What can the paper from milk cartons turn into?
A. Park benches. B. Cans. C. Notebooks. D. Boxes.
()4. Which of the following is NOT a step of recycling a milk carton?
A. Open the carton and wash it with water.
B. Cut the carton into pieces.
C. Make the carton flat.
D. Put the carton in a recycling bin.
()5. Why should we make a milk carton flat?
A. Because this helps it dry quickly.
B. Because this makes it become clean quickly.
C. Because this gives it a new life.
D. Because this uses less energy to recycle it.