题目

电源是把_________________________能转换为______________能的装置。 答案：【答案】其它形式的 电 【解析】电源是将其它形式的能转化为电能的装置。It is quite reasonable to blame traffic jams, the cost of gas and the great speed of modern life, but manners on the road are becoming terrible. Everybody knows that the nicest men would become fierce tigers behind the wheel. It is all right to have a tiger in a cage, but to have one in the driver's seat is another matter.Road politeness is not only good manners, but a good sense. It takes the most cool-headed (头脑冷静的) drivers great patience to give up the desire to beat back when they are forced to face rude driving. On the other hand, a little politeness goes a long way towards reducing the possibility of quarrelling and fighting. A friendly nod or a wave of thanks in answer to an act of politeness helps to create an atmosphere of good will and becomes so necessary in modern traffic conditions. But such behavior of politeness is by no means enough. Many drivers nowadays don't even seem able to recognize politeness when they see it.However, misplaced（用错了地方的） politeness can also be dangerous. A typical example is the driver who waves a child crossing the street at a wrong place into the path of oncoming cars that may not be able to stop in time. The same goes for encouraging old ladies to cross the road wherever and whenever they want to.An experienced driver told me it would help if drivers learnt to correctly join in a traffic stream without causing total blockages( 拥堵) that give rise to unpleasant feelings. Unfortunately, modern drivers can't even learn to drive, let alone（更不用说） master the roadman ship ( 公路驾车技能). Years ago, experts warned us that the fast increase of the car ownership would demand more give and take( 互谅互让) from all road users. It is high time for all of us to take this message to heart.1.The passage mainly talks about______________________.A. traffic jams B. good mannersC. road politeness D. modern drivers2.Troubles on the road are often caused by__________________.A. traffic jamsB. the behavior of the driversC. the great speed of modern lifeD. terrible road conditions3.According to the writer, a good driver should___________________.A. encourage children to cross the road whenever they want toB. beat back when forced to face rude drivingC. be able to recognize road politeness when he sees itD. join in a traffic stream quickly however other people feel4.It is not right for drivers to_________.A. master the roadmanshipB. join in a traffic streamC. give a friendly nod in answer to an act of politenessD. encourage old ladies to cross the road whenever and wherever they want to