题目

听第二段对话，选出回答两个问题的正确答案。念两遍。（1） What does David want to be in the future? A . An inventor． B . An engineer． C . A doctor．（2） Why doesn't the car pollute the air? A . Because it uses wind power． B . Because it uses solar power． C . Because it uses electricity．答案： A B

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