单项选择题
A.Increasing people’s awareness of traffic problems. B.Enhancing drivers’ sense of responsibility. C.Building more highways. D.Designing better cars.
A.They are now taught in their own language. B.They are now allowed to attend local schools. C.Special schools have been set up for them. D.Permanent homes have been built for them.
A.Highway crime. B.Drivers’ errors. C.Poor traffic control. D.Confusing road signs.