Motoring Technology
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.
参考答案:D、B、A、C、A
[连词]比较so和 such
[虚拟语气]非真实条件句
[句子的种类]感叹句结构
[倒装]倒装句之部分倒装
[虚拟语气]特殊的虚拟语气词should
[倒装]其他部分倒装
[定语从句]关系副词引导的定语从句
[主谓一致]与后接名词或代词保持一致
[定语从句]as, which 非限定性定语从句
[情态动词]比较have to和must
[名词性从句]if, whether引导的名词从句
[情态动词]比较may和might
[定语从句]介词+关系词
[定语从句]关系代词引导的定语从句
[动词的时态]过去完成时
[状语从句]比较until和till
[状语从句]方式状语从句
[虚拟语气]虚拟条件句的倒装
[状语从句]原因状语从句
[名词性从句]名词性that-从句
[连词]并列连词与并列结构
[虚拟语气]need "不必做"和"本不必做"
[定语从句]关系代词that 的用法
[定语从句]判断关系代词与关系副词
[定语从句]限制性和非限制性定语从句
[状语从句]地点状语从句
[状语从句]让步状语从句
[状语从句]结果状语从句
[动词的语态]表示"据说"或"相信" 的词组
[定语从句]what/whatever; that/what; who/whoever
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