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听下面一段材料,回答第1-3题。 1. Which country does the speakers come fro

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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.
听下面一段材料,回答第1-3题。 1. Which country does the speakers come fro
1-3: BCA