听下面一段材料,回答第1-3题。 |
1. Which country does the speakers come from? |
A. Australia. B. China. C. Japan. |
2. What is a very serious problems according to the speaker? |
A. Cigarette ends. B. Chewing gum. C. Chopsticks. |
3. How many problems do we have to solve to keep the street more tidy? |
A. Two. B. Three C. Four. |