Bamboo chopsticks are some of the world's most popular utensils, but create their fair

B. He wants to make a fortune out of used chopsticks.
C. He intends to compete against Ikea and Amazon.
D. He finds city resources fail to be used efficiently.
29. What is paragraph 3 mainly about?
A. Why the first hydraulic hot press was invented.
B. What the chopstick-tiles are probably used for.
C. How used chopsticks are processed and recycled.
D. When densified tiles are made from used chopsticks.
30. Which of the following is probably true about Amazon?
A. It sometimes deliver products from afar.
B. It expects to have global support.
C. It will shrink their business overseas.
D. It hardly mass-produces in a single place.
31. What can we learn about the chopsticks?
A. They can decorate whatever you want.
B. They can be recycled in restaurants.
C. They can take on a brand new life.
D. They are responsible for too much waste.

答案DCAC