听第三段对话,回答第10~12小题。
()10. What's the T-shirt special for?
A. It's made of card.
B. It's made of 30% cotton.
C. It can protect both the environment and the wearer.
()11. Who probably invented the T-shirt?
A. Alice.
B. Linda.
C. Jane.
()12. What's the relationship between the two speakers?
A. Classmates.
B. Mum and son.
C. Clerk and customer.

10.C 11.C 12.A

听第四段对话,回答第13 ~15 小题。
()13. What can the "Biodegradable Box Maker" turn corn straw into?
A. Plastic boxes.
B. Biodegradable lunch boxes.
C. Hot food containers.
()14. What's special about the "Smart Water-Saving Pot"?
A. It has a sensor to check soil moisture.
B. It needs water every hour.
C. It requires manual watering every day.
()15. What do they plan to do next?
A. Buy the Smart Water-Saving Pot.
B. Ask the inventor how to use the box maker.
C. Find a guide to show them around.

13.B 14.A 15.B

三、听短文，选择正确答案（短文读两遍）
()16. How many people shared a fridge?
A. Three. B. Four. C. Five.
()17. What did the writer's workmate think of the water?
A. Dirty. B. Sweet. C. Cold.
()18. How was the problem solved?
A. By cleaning the cup. B. By changing a fridge. C. By talking to the leader.
()19. Why do we believe it's others' problem when there's something wrong?
A. Because we can see others' problems.
B. Because we listen to others and follow them easily.
C. Because we make judgements without thinking twice.
()20. What does the story mainly tell us?
A. Helping others is necessary in our daily life.
B. Think more from our sides instead of doubting others.
C. The world isn't perfect and we should ask more questions.

16.B 17.A 18.A 19.C 20.B