B
I’m sure you all know how important recycling is. Recycling is to take old things and turn them in- to new things. It sounds like magic. But it’s actually very scientific.

() 4. What is “recycling” according to the passage?
A. It’s a magic performance.
B. It’s a way of burning old things.
C. It’s a way to make old things useful.
D. It’s a scientific research.
() 5. Which material is not mentioned in the passage?
A. Rubber.
B. Metal.
C. Glass.
D. Plastic.
() 6. You can put your old things into a recycling bin except .
A. soda cans
B. magazines
C. cereal boxes
D. all bottles
() 7. The “3 arrows” shows that the items .
A. have some valuable stamps
B. are in a triangular circle
C. are recycled and reused
D. are thrown away

4. C
5. A
6. D
7. C