1.2 million road deaths worldwide occur each year,plus a further 50 million injuries.To reduce car crash rate,much research now is focused on safety and new fuels-though some electric vehicle and biofuel research aims at going faster.
Travelling at speed has always been dangerous.One advanced area of research in motoring safety is the use of digital in-car assistants.They can ensure you dont miss important road signs or fall asleep.Most crashes result from human and not mechanical faults.
Some safety developments aim to improve your vision.Radar can spot obstacles in fog,while other technologysees throughbig vehicles blocking your view.
And improvements to seat belts,pedalcontrols and tyres are making driving smoother and safer.The colour of a car has been found to be linked with safety,as have,less surprisingly,size and shape.
But whatever is in the fuel tank,you dont want a thief in the driving seat and there have been many innovations.Satellite tracking and remote communications can also come into play if you crash,automatically calling for help.
Accidents cause many traffic jams,but there are more subtle interplays between vehicles that can cause jams even on a clear but busy road.Such jams can be analyzed using statistical tools.Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyonss personal chauffeur,but their latest efforts suggest that wont be soon.
1.To reduce car crash rate,many scientists are working hard to
A.design fully automatic cars.
B.develop faster electric vehicles.
C.analyze road deaths occurring worldwide each year.
D.improve the safety of cars and develop new fuels.
2.According to the second paragraph,most road accidents happen due to
A.heavy traffic.
B.human mistakes.
C.engine failure.
D.bad weather.
3.Which of the following safety developments is NOT mentioned in the passage?
A.Windscreens that can help drivers to improve their vision.
B.Radars that can help drivers to see obstacles in fog.
C.Devices that can help drivers to see through big vehicles.
D.Improvements in seat belts,pedal controls and tyres.
4.Satellite tracking and remote communication systems cna be used to
A.reduce oil consumption.
B.remove the obstacles on the road.
C.call for help when ones car crashes.
D.help drivers get out of a traffic jam.
5.Which of the following statements is true of robotic drivers?
A.It will take some time before robotic drivers are available.
B.Robotic drivers are not allowed to driveon busy roads.
C.Robotic drivers can never replace human drivers.
D.Robotic drivers are too expensive to use.
答案:D、B、A、C、A
2013牛津译林版英语高二上册期中测试1
北师大版高中英语必修四Unit 11《The Media》word单元综合测评
2013外研版必修四Module 4《Great Scientists》word单元测试卷
2013人教版必修四《Body Language》word同步练习7
2013外研版必修四Module 5《A Trip Along the Three Gorges》word单元测试卷
北师大版高中英语必修四Unit 10《Money》(Lesson 4)课后练习
2013外研版必修四Module 6《Unexplained Mysteries of the Natural World》word练习题
2013牛津译林版必修四Unit 1《Advertising》word同步测试
2013人教版必修四《Body Language》word同步练习5
北师大版高中英语必修四Unit 10《Money》(Lesson 5)课后练习
北师大版高中英语必修四Unit 10《Money》word提升演练
外研版高中英语必修4《Module 4 Great Scientists》word同步测试
北师大版高中英语必修四Unit 10《Money》word随堂练习7
2013外研版必修四Module 3《Body language and Non-verbal Communication》word练习题
2015-2016学年人教版英语必修4Unit 4《Body language》word验收检测
北师大版高中英语必修四Unit 10《Money》word单元综合测评
北师大版高中英语必修四Unit 10《Money》word能力自评练习
北师大版高中英语必修四Unit 10《Money》word随堂练习6
北师大版高中英语必修四Unit 10《Money》(Lesson 2)课后练习
北师大版高中英语必修四Unit 10《Money》word同步测试(35页,含答案)
外研版高中英语必修4《Module 1 Life in the future》word同步测试
外研版高中英语必修4《Module 4 Great Scientists》word能力闯关
2013人教版必修四《Body Language》word同步练习4
2013牛津译林版英语高二上册期中测试2
北师大版高中英语必修四Unit 10《Money》word随堂练习4
外研版高中英语必修4《Module 5 A Trip Along the Three Gorges》word同步测试
外研版高中英语必修4《Module 2 Traffic Jam》word同步测试
北师大版高中英语必修四Unit 10《Money》(Lesson 3)课后练习
2013人教版必修四《Body Language》word同步练习6
2015-2016学年人教版英语必修4Unit 5《Theme parks》word验收检测