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听力习题：

　　29.

　　A. The sadness of being involved in accidents.

　　B. Ways to limit the use of private cars.

　　C. The serious pollution on motor roads.

　　D. Freedom to travel quickly and safely.

　　30.

　　A. Increasing fines for traffic violation.

　　B. Reducing tolls on highways.

　　C. Banning public transport partially.

　　D. Enlarging insurance coverage.

　　31.

　　A. Car owners will be encouraged to show off their wealth.

　　B. The gap between the rich and the poor will be bridged.

　　C. Pollution and traffic congestion will be reduced.

　　D. People will have to stand still waiting for taxies.

【责任编辑：屈应兰】