题目内容
（请给出正确答案）
A. 许多电动车车主都认为充电点很吵闹。
B. 许多电动车车主都为充电点在争论。
C. 许多电动车车主都认为争论充电点有点大惊小怪。
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更多“Many electric car owners consi…”相关的问题
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.
Hybrid Cars
Have you pulled your car up to the gas pump lately and been shocked by the high price of gasoline？ As the pump clicked past $20 or $30, maybe you thought about trading in your car for something that gets better mileage. Or maybe you're worried that your car is contributing to the greenhouse effect.
The auto industry has the technology to address these concerns. It's the hybrid car. You're probably aware of hybrid cars because they've been in the news a lot. Most automobile manufacturers have announced plans to manufacture their own versions. What makes it a "Hybrid"？
Any vehicle is a hybrid when it combines two or more sources of power. In fact, many people have probably owned a hybrid vehicle at some point. For example, a moped (a motorized pedal bike) is a type of hybrid because it combines the power of a gasoline engine with the pedal power of its rider.
Hybrid vehicles are all around us. Most of the locomotives we see pulling trains are diesel-electric hybrids. Cities like Seattle have diesel-electric(以柴油发动机发电的) buses—these can draw electric power from overhead wires or run on diesel when they are away from the wires. Giant mining trucks are often diesel-electric hybrids. Submarines are also hybrid vehicles — some are nuclear-electric and some are diesel-electric. The gasoline-electric hybrid car is a cross between a gasoline-powered car and an electric car.
Hybrid Structure
You can combine the two power sources found in a hybrid car in different ways. One way, known as a parallel hybrid, has a fuel tank, which supplies gasoline to the engine. But it also has a set of batteries that supplies power to an electric motor. Both the engine and the electric motor can turn the transmission at the same time, and the transmission then turns the wheels.
By contrast, in a series hybrid the gasoline engine turns a generator, and the generator can either charge the batteries or power an electric motor that drives the transmission. Thus, the gasoline engine never directly powers the vehicle.
Why Build Such a Complex Car？
You might wonder why anyone would build such a complicated machine when most people are perfectly happy with their gasoline-powered cars. The reason is twofold: to reduce tailpipe emissions and to improve mileage. These goals are actually tightly interwoven.
Evolution of the Hybrid
The hybrid is a compromise. It attempts to significantly increase the mileage and reduce the emissions of a gas-powered car while overcoming the shortcomings of an electric car.
The Problem with Gas-powered Cars
To be useful to you or me, a car must meet certain minimum requirements. The car should be able to:
-Drive at least 300 miles (482 km) between re-fueling
-Be refueled quickly and easily
-Keep up with the other traffic on the road
A gasoline car meets these requirements but produces a relatively large amount of pollution and generally gets poor gas mileage. An electric car, on the other hand, produces almost no pollution, but it can only go 50 to 100 miles (80 to 161 km) between charges. And the problem has been that it is very slow and inconvenient to recharge.
A driver's desire for quick acceleration causes our cars to be much less efficient than they could be. You may have noticed that a car with a less powerful engine gets better gas mileage than an identical car with a more powerful engine. Just look at the window stickers(有图形或文字的粘贴标鉴) on new cars at a dealership for a city and highway mph comparison.
The amazing thing is that most of what we require a car to do uses only a small percentage of its horsepower! When you are driving along the freeway at 60 mph (96.6 kph), your car engine has to provide the power to do three things:
&
A．Y
B．N
C．NG
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 risky. One cutting edge area2of research in motoring safety is the use of digital in-car assistants. They can ensure you don't miss crucial road signs or fall asleep. The use of artificial intelligence software allows these assistants to monitor your driving and makes sure your phone or radio doesn't distract you at a vital moment. 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 technology "sees through" high-sided vehicles blocking your view.
And improvements to seat belts, pedal controls 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.
And alternatives to fossil-fuel based petrol, such as plant oils, are a hot area of research. Fuel cells based on hydrogen burn cleanly, and are the subject of a serious research effort,
But whatever is in the fuel tank, you don't want a thief in the driving seat and there have been many innovations, some using satellite tracking and remote communications, to fight against car theft. These communication systems 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 analysed using statistical tools. Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyone's personal chauffeur, but their latest efforts suggest that won't be soon.
What are researchers interested in doing as the road accidents worldwide increase to a shocking rate ？
A．They are developing faster electric vehicles.
B．They are analyzing road deaths occurring worldwide every year.
C．They focus their research on safety and new fuels.
D．They are designing fully automatic cars.
听力原文：Ken: Hey, John, that new Honda you have got is just beautiful.
John: Yeah, it is a nice car, isn't it？ Yours is a lot fancier though. I really like those electric windows.
Ken: Yeah, but our cars have something in common. Uh, they're both blue.
John: That is right. But they don't have much else in common.
Ken: How many miles to the gallon do you get？
John: Oh, I get about forty in town, a little more on the highway.
Ken: Oh, really？ I don't get anywhere near that. I only get about twenty.
John: But you got a lot more power-you can really accelerate.
Ken: As far as I am concerned, the only reason I have a lot of power in my car is I can haul my trailer.
John: Well, of course, you got a lot more room in the trunk than I have, too.
Ken: Mm. Yeah, but small cars are cheaper to run in the city.
John: That is true. A Honda is a lot better for me because I do a lot of city driving.
Ken: And small cars are easier to find parking space for.
John: Yeah, but neither one is all that cheap to run when you think about the cost of insurance and maintenance
Ken: You know what, John？ I think I have an answer.
John: What's that？
Ken: Let's take the bus.
John and Ken's cars don't have much in common EXCEPT _______.
A．They are cheap
B．They have electric windows
C．They are blue
D．They can haul trailer
In order to cut down on the carbon emission，more people choose to travel______.
A．by electric car，bicycle or plane
B．by private car，bicycle or bus
C．by bus，electric car or plane
D．by bicycle. bus or electric car
Electric Cars: Low-impact Vehicle
After years of false starts, General Motors has at last set a date for putting its first battery-powered car into production. The EV1 that will roll out of GM's factory in Lansing, Michigan, later this year will be the first car in modern times to have been specifically designed by a big car maker to run on electricity.
A proper marketing of electric cars？
The timing is intriguing. GM has announced its decision just as California's regulators are preparing to relax the strict air quality standards that were an important reason for going ahead with the project in the first place. The California Air Resources Board decided in 1990 that 2% of the vehicles sold in that state by the seven companies with the largest market share would have to be emission-free — in other words — electric-starting in 1998. By 2003, the board wanted the figure to be 10%. Now it admits that "new studies" have shown what everyone else knew all along: that its mandate (命令)would be impossible to meet using existing battery technology.
Many challenges faced
This is because without official bullying, people are reluctant to buy electric cars. Although the EV1 has been loaded with all sorts of baubles(花哨的小玩意儿) — dual air bags, air conditioning, power windows, even a CD stereo system — it is far from clear that these will compensate for a puny range, the basic flaw of every electrical vehicle. Publicly, GM officials claim that the car will have to be recharged every 145 km (90 miles) or so, but they concede privately that the real figure is likely to be close to 100 km. Without access to a high-speed charger, such a refill will take around 15 hours.
Even squeezing this much range out of the EV1 has required a lot of engineering sleight (灵巧)of hand. Around 400 kg (900 lb) of lead-acid batteries are secreted about its body. To help compensate for all this weight, and to maximize the distance it can cover, the vehicle is equipped with low-rolling- resistance tyres, an aluminum chassis (底盘), a wind-cheating plastic skin and a regenerative braking system that helps to recapture energy normally lost when the brakes are applied. Even the tear-drop body shape should cut down wind resistance.
Owners of an EV1 will have two ways of charging it. Those without access to a g20-volt power supply (most American domestic circuits are 110 volts) will have to do it the hard, 15-hour, way by plugging into a normal socket in the boot. But the preferred method is more ingenious(巧妙的): use of a paddle-like contraption (发明) that is inserted into a small slot in the car's nose. This operates by induction(电磁感应), eliminating the risk of sparks that might ignite the hydrogen released during recharging.
At 220 volts the paddle can give an EV1 the electrical equivalent of a full tank in three hours. Super-charged versions of the device, designed for use in service stations, shopping-malls and fast-food restaurants, can bring the batteries up to 80% strength in mere 15 minutes. The fate of the EV1 could therefore be determined by GM's success in convincing the owners of such establishments to install these special chargers, thus creating a convenient alternative to petrol pumps for keeping a car fuelled up.
The EV1 will be sold at a price of $ 35,000 through GM's Saturn dealerships and, in an unusual move, under the GM brand — the first time a product has been sold using the corporation's own name. It will initially be available only in four cities in southern California and Arizona. Environmental regulators in several other smog-bound states are also hoping to develop a market for electric vehicles, but GM's engineers feel that the EV1's lead-acid batteries would not function well in the sort of frigid conditions now blanketing the north-eastern states. Cold weather reduces a battery's power and life, and increases tyre fri
A．Y
B．N
C．NG
A.feasible
B.possible
C.OK
D.probable
What is the big problem with an electric car？
A．Its battery is not powerful enough.
B．Its battery is of enormous size.
C．It costs too much money.
D．It breaks down easily.
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