A、The causes are common. B、The causes are not well understood. C、The causes are obvious. D、The causes are very complicated. D本题考

As the car industry develops, traffic accidents have become as familiar as the common cold. Yet, their cause and control remain a serious problem that is difficult to solve. Experts have long recognized that this discouraging problem has multiple causes. At the very least, it is a problem that involves three factors: the driver, the vehicle and the roadway. If all drivers exercised good judgment, there would be few accidents. But this is rather like saying that if all people were honest, there would be no crime. Improved design has helped make highways much safer. But the tide of accidents continues to rise because of human failure and an enormous increase in the number of automobiles on the road. Attention is now turning increasingly to the third factor of the accident, the car itself. Since people assume that the accidents are bound to occur, they want to know how cars can be built better to protect the drivers.
12. What does the speaker think of the causes of automobile accidents?
13. What measure has been taken to reduce car accidents?
14. What remains an important factor for the rising number of road accidents?
15. What is the focus of people’s attention today according to the passage?