单选题Oil is a nonrenewable resource, whereas sunshine is limitless. So why not run cars on solar power? Because a car powered by solar collecting panels would be fine on a sunny day, but as soon as the sun went behind a cloud, the car would no longer functi
题目
Solar power is cleaner than fossil fuels, and it involves less geopolitical risk.
In most of the northern hemisphere, it can be expected that more than 150 days a year will be cloudy.
No system exists for storing solar energy for a car’s use when the car is not in direct sunlight.
No one has yet introduced a commercially viable process for mass-producing solar cells that convert more than 10 percent of incoming sunlight into usable energy.
Consumers accustomed to the rapid acceleration of gasoline-powered cars will not accept the weak acceleration of solar-powered cars.
相似考题
更多“单选题Oil is a nonrenewable resource, whereas sunshine is limitless. So why not run cars on solar power? Because a car powered by solar collecting panels would be fine on a sunny day, but as soon as the sun went behind a cloud, the car would no longer functi”相关问题
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第1题：
One day a woman got into her car and started driving home after work.Suddenly, she saw a yellow car behind her.The driver was a man.When she turned left, the yellow car turned left.When she turned right, the yellow car turned right, (1) When she stopped at the traffic lights, the yellow car stopped(2)her.The woman was afraid,so she drove quickly to the police station.She was very surprised when she found the car stopped behind her.At that time, a young man was standing outside the police station.The woman was very happy to see him.She knew that he was a policeman because he was (3)a police uniform. She jumped out of her car and ran to the policeman.She asked him to arrest the man in the yellow car, so the policeman walked to the man
The man didn' t try to run(4)when he saw the policeman He just smiled and said to the woman."I want to give this purse ack to you, madam.I think you (5) it on the street.”(完型填空)
A.Wearing
B.Behind
C.Too
D.Dropped
E.Away
参考答案：CBAED
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第2题：
Vicki’s heart missed a beat because 。
A. the phone went again
B. she would be famous
C. the policemen had already arrived
D. she saw 20 policemen in the car park
正确答案：C事实细节题。根据第六段‘Would you go and make yourself known to the armed officers outside?’. 可知警察已经到了，因此选项C为正确答案。 -
第3题：
__________the sun is the central body of the solar system so the nucleus is the core of the atom．
A．When
B．If
C．Now that
D．Just as
正确答案：D
just as…so“正像……一样……也”。为固定搭配，其余不符合题意。 -
第4题：
共用题干
A Ride in a Cable-car
A ride in a cable-car is one of the exciting and enjoyable experiences a child can have.In
Switzerland,which is the home of the cable-car,it is used mostly to take tourists up the slope of a mountain,to a restaurant from which one can have a bird-eye view of the surrounding country, or to a top of a ski-run,from which,in winter,skiers glide down the snow covered the slope on skis .In Singapore,however,the cable-car takes one from the summit of a hill on the main island to a low hill on Sentosa,a resort island just off the southern coast.
The cable-car is really a carriage which hangs from a strong steel cable suspended in the air.
It moves along the cable with other cars on pulleys,the wheels of which are turned by electric motors. The cars are painted in eye-catching colours and spaced at regular intervals.Each car can seat up six persons.After the passengers have entered a car,they are locked in from outside by an attendant,they have no control over the movement of the car.
Before long,the passengers get a breath-taking view through the glass windows of the modern city,the bustling harbour,and the several islands off the coast. The car is suspended so high in the air that slips on the sea look like small boats,and boats like toys.On a clear day,both the sky above and the sea below look beautifully blue.
In contrast to the fast-moving traffic on the ground,the cars in the air move in a leisurely manner,allowing passengers more than enough time to take in the scenery during the brief trip to the island of Sentosa.After a few hours on Sentosa,it will be time again to take a cable-car back to Mount Faber. The return journey is no less exciting than the outward trip.The short trip does not bother passengers who want a good view because______.
A: the cars move slowly
B: the cars move quickly
C: the cars are suspended very high
D: the cars have glass windows答案：A解析：选项A、B和D所涉及的情况都在瑞士，这在第一段可以看到。唯有C选项谈新加坡的情况，所以选项C是正确答案。
缆车是由马达带动的，没有驾驶员和轮子，也不受乘客控制。根据文中提示“The cable-car is really a carriage which hangs from a strong steel cable suspended in the air.”所以正确答案是A。
从上下来看，乘客所看到的惊险景色是因为“The car is suspended so high in the air that ships on the sea look like small boats , and boats like toys.”所以答案选B。
旅程虽短，但是“The cars in the air move in a leisurely manner, allowing passengers more than enough time to take in the scenery”，所以答案应该选A。
no less than意为“不比……少”,“和……一样”，所以正确答案应该选C。 -
第5题：
共用题干
California Gives Green Light to Space Solar Power
Energy beamed down from space is one step closer to reality,now that California has given the green
light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts（兆瓦）of power
beamed down from solar-power satellites beginning in 2016.But some major challenges will have to be
overcome if the technology is to be used widely.
A start-up company called Solaren is designing the satellites,which it says will use radio waves to beam
energy down to a receiving station on Earth.
The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo-
synchronous（与地球同步的）orbit. Earth-based solar cells , by contrast , can only collect sun light during day-
time and when skies are clear.
But space-based solar power must grapple（努力克服）with the high cost per kilogram of launching things in-
to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being
economically viable for power of the Earth,it's a tough go,"he says.
Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view
to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says.
A patent the company has won describes ways to reduce the system's weight,including using inflatable mir-
rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.
But using mirrors introduces other challenges,including keeping the solar cells from overheating,says
Schwartz."You have to take care of heat dissipation（散发）because you're now concentrating a lot of energy
in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-
tors to help keep them cool.
Though Boerman says the company believes it can make space-based solar power work,it is not expec-
ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use
of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of
renewable energy sources,"he says.Space-based solar cells could collect solar power only when skies are clear.
A:Right
B:Wrong
C:Not mentioned答案：B解析：根据短文第二段可知，太阳能卫星会使用无线电波将能源发送到地球上的接收站。
短文在第一段中讲太平洋天然气和电力公司将购买200兆瓦的从太阳能电站的卫星上 发送来的电力时提到了200这个数字。
短文在第三段末尾提到：地球上的太阳能电池只能在白天且无云的时候收集阳光。
根据短文第四段可知，在太空的太阳能工厂必须努力克服的问题是：向太空每发射一 千克的物品都要付出高昂代价，即成本高的问题。
根据短文第五段的最后一句可知答案。
根据短文最后一段可知，从太空中获得的太阳能并不会挤掉其他形式的可再生能源。
短文主要围绕美国，尤其是加州来说，并没有提到其他国家的情况。 -
第6题：
共用题干
Computers in Cars
You're far from home on a lonely road.Shadowy forests stretch away on both sides.A thick mist（雾）makes it difficult to see far beyond your car's windshield（挡风玻璃）.
“Can this be route 90A?”you wonder. if it is,you should be near a town.Yet there's no hint of one .Night is closing in.And you're low on gasoline.
This is a situation where an in-car computer that can navigate would be a big help.
A car computer that navigates?Yes!Such computers exist.Several experimental models are being tested by General Motors,Ford,Chrysler,and several foreign car makers.These computers vary in detail .But they all contain series of maps on videodiscs or videotapes.For example,one computer system contains 13,300 maps covering the continental US.
Before starting out on a trip,a driver can type in the code for the region he or she plans to drive through .The computer then shows a map of that region.At the same time,a tiny radio re-ceiver linked to the computer goes to work.It picks up signals from navigation satellites such as the NAVSTAR network.Using these signals,the computer shows the car's position at all times and displays this position on the map.The computer can also calculate and display the best route to follow.
A navigation computer may also receive and use data about road construction,weather condi- tions,and traffic jams.This information would be displayed to the driver and the computer would also use the information to work out alternate（交替的）routes.
Most cars nowadays also contain computers that help cars run more efficiently .Microproces- sors（微处理机）control certain engine functions by regulating the mixing of fuel. Data on car speed,oil pressure,revolutions per minute,engine temperature,and fuel level can be displayed as digital data(numbers)or warning lights.
Some auto designers suggest that a central computer display be used to clearly present such timely information as car speed and fuel level.Warning lights would indicate a drop in oil pres- sure or a sudden rise in engine temperature .To get more information on these conditions,the driver could call it up on the computer display screen.When needed,the computer could be “asked”to provide navigation aid or information about the car's condition.Without signals from navigation satellites,the in-car computer______.
A: would still be able to locate the car's position at all times
B: would fail to locate the car's position
C: could still work out the best route to follow
D: would seek help from the radio receiver linked to it答案：B解析：文章第二段描述了一位司机迷路的情况，紧接着第三段讲到，当汽车上装载了计算机导航系统后，会给司机带来很大的方便。很明显，答案为选项C。
本题属于词汇题，问“navigate”在第三段中的意思是什么？navigate的本意是“导航”，即选项C的意思，但在文中，它不是给轮船导航，而是为汽车导航，为驾驶员指路，故选项B为正确答案。
本题是根据第四段中间这两句话出的问题：These computers vary in detail. But they all contain series of maps on videodiscs or videotapes．所有（车载）计算机导航系统都含有电子地图，即保存在视盘或录像带上的地图（series of maps on videodiscs or videotapes),所以A为正确答案。
本题问题的是当车载计算机收不到来自导航卫星的信号时会出现什么情况。根据常识可以判断，计算机无法确定汽车的位置。此题可以通过第五段中的“Using these signals,the computer shows the car's position at all times and displays this position on the map.”推断出来：本题是此句意思的反说。
选项中给出了计算机导航系统的几个功能，问其中哪项不是。通过阅读短文，我们发现选项B的信息文中没有提到，故此题选B。 -
第7题：
单选题According to the passage9 which of the following statements is NOT TRUE?ASolar panels are very expensive to install.
BSheridan Community Schools is completely solar-powered.
CIn 2014, fewer than l,000 schools used solar power in the US.
DMore and more schools are switching to solar power to cut costs.
正确答案： C解析： -
第8题：
单选题AAutomobile safety.
BIncreasing fuel efficiency.
CElectricity-powered cars.
DThe improvement of car batteries.
正确答案： C解析：
[考点]主旨题。录音中介绍了一种新型汽车——电动汽车，介绍了它的优缺点，以及改进缺点的可能的办法，总结起来，主要讲的就是这种电动汽车。C项正确。 -
第9题：
问答题Practice 3 At first, as he adjusted pumps and checked temperatures, Aaron Boucher looked like any technician in the control room of an electrical plant. Then he rushed to the window and scanned the sky, to check his fuel supply. Mr. Boucher was battling clouds, timing the operations of his power plant to get the most out of patchy sunshine. It is a skill that may soon be in greater demand, for the world appears to be on the verge of a boom in a little-known but promising type of solar power. It is not the kind that features shiny panels bolted to the roofs of houses. This type involves covering acres of desert with mirrors that focus intense sunlight on a fluid, heating it enough to make steam. The steam turns a turbine and generates electricity. The technology is not new, but it is suddenly in high demand. As prices rise for fossil fuels and worries grow about their contribution to global warming, solar thermal plants are being viewed as a renewable power source with huge potential. After a decade of no activity, two prototype solar thermal plants were recently opened in the United States, with a capacity that could power several big hotels, neon included, on the Las Vegas Strip, about 20 miles north of here. Another 10 power plants are in advanced planning in California, Arizona and Nevada. On sunny afternoons, those 10 plants would produce as much electricity as three nuclear reactors, but they can be built in as little as two years, compared with a decade or longer for a nuclear plant. Some of the new plants will feature systems that allow them to store heat and generate electricity for hours after sunset. At Nevada Solar One the other day, Mr. Boucher, 30, ran the computerized control room. He was trying to produce as much electricity as possible while saving heat to tide the plant over as clouds cast episodic shadows on the solar array. “I’ve been fighting it all day,” he said. Imperceptibly, in the dusty wind of the high desert, 182,000 mirrors moved from east to west, tracking the sun across the sky.正确答案：
【参考译文】
安让·布切尔看上去和电站控制室中其他任何一位技术人员一样,他首先调整了校泵并检查了温度,然后跑到窗户边望了望天空,以确定燃料的供给是否适合。
布切尔先生正和云层较量,调整电站的操作以便从四散的阳光中获得最大的能量。这种技术在不久可能就会倍受青睐,因为世界各地的人们对这种知之甚少但却很有前景的太阳能源正趋之若鹜。
这可不是那种装在屋顶带有闪闪发光镶板的太阳能设备,而是在数以英亩计的沙漠上铺设聚光镜,将阳光聚集到一种液体上,加热使其变成蒸汽,然后蒸汽带动涡轮机从而产生电能。
这不是一种新的技术,但却很受青睐。随着化石燃料价格的上涨及人们对其所对全球变暖带来的影响的担忧,太阳能热电站被认为是一种极具潜力的可再生能源的来源。
在沉寂十年之后,美国最近新建了两座太阳能热电站,另外10个类似的电站正在筹建之中,计划建于加州、亚利桑那州和内华达州。
在阳光明媚的下午,这10座电站所发的电量能达到3个核反应堆所发出的电量,但这些电站只需要2年久可以建成,而一个核电站需要10年甚至更长的时间才能建成。一些新建的电站带有新的系统,可以储存热能,从而保证电站在日落后能继续工作数小时。
这天,在内华达一号太阳能电站,30岁的布切尔先生在计算机控制的控制室中进行操作。他正尽量使电站能多发点,同时他也在存储热能以便当云层遮住聚光镜是能够使电站继续工作。他说:“我一整天都在和云层较量。”
在风沙四起的沙漠,182000面聚光镜悄无声息的随着天空的太阳从东边转向西边。解析： 暂无解析 -
第10题：
单选题What is the fourth paragraph of the passage mainly about?AThe ways to use solar power.
BThe advantages of solar power.
CThe places to build the solar power plants.
DThe difficulties of putting solar power to use widely.
正确答案： B解析：
主旨大意题。本段主要介绍的是把太阳能投入广泛使用需要的条件以及遇到的困难。 -
第11题：
问答题A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail link only.正确答案：解析： -
第12题：
单选题—Why do people there ______ use umbrellas in the sun?—Because they would rather enjoy the sunshine.Ahardly
Boften
Calways
Dsometimes
正确答案： B解析：
句意：——为什么人们在太阳底下很少用伞呢？——因为他们更愿意享受阳光。本题考查副词的用法。结合答语中人们愿意享受阳光，可知他们是很少用伞。故hardly符合题意，因此选A项。 -
第13题：
Ten workers in China pushed their boss's car three miles home after an office party because they were all too drunk to drive. The group was enjoying a meal at a restaurant in downtown Changchun, Jilin Province (northeast China). When the party was over, Boss Zhang Fei found that he was too drunk to drive. Then suddenly they realized nobody had stayed sober enough to drive his car.
Drink-driving was listed as a dangerous offence in China in 2014, esp. when the driver is drunk. Those who break the law will have their driving license revoked, face a heavy fine and may be put in jail. Zhang did not want to leave his car downtown and it was too late to call out another driver to drive the car for him. Someone then suggested they push the car home, and said that the exercise would do them all good. Thus, all ten quickly agreed and set off with Zhang at the wheel. All ten workers pushed their boss's car home through the city streets, laughing and singing during the 45-minute journey. Passers-by were shocked to see the group.
Traffic officers said that as long as the car's engine was not running, it would not be classed as drink-driving under the law. However, it is still very dangerous for so many people to push the car along the road, as it may cause traffic accidents.
1. ______ workers in China pushed their boss's car home in _______ minutes.
A. 45, 10
B. 3, 8
C. 10, 45
2. Drink-driving was listed as a dangerous offence in China in __________.
A. 2013
B. 2014
C. 2015
3. Those who break the law may _______.
A. not have their driving license revoked
B. not face a heavy fine
C. be put in jail
4. People pushing the car along the road would not be classed as drink-driving because _______.
A. the car engine was not running
B. those people didn't drink
C. there were no police on the road
5. We can infer from the passage that drink-driving _________ the law.
A. is not against
B. is against
C. has nothing to do with
参考答案：CBCAB
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第14题：
—Why didn‘t you buy a new car？ —I would have bought one if I _______ enough money. A. had B. have had C. would have D. had had
正确答案：D
-
第15题：
共用题干
California Gives Green Light to Space Solar Power
Energy beamed down from space is one step closer to reality,now that California has given the green
light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts（兆瓦）of power
beamed down from solar-power satellites beginning in 2016.But some major challenges will have to be
overcome if the technology is to be used widely.
A start-up company called Solaren is designing the satellites,which it says will use radio waves to beam
energy down to a receiving station on Earth.
The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo-
synchronous（与地球同步的）orbit. Earth-based solar cells , by contrast , can only collect sun light during day-
time and when skies are clear.
But space-based solar power must grapple（努力克服）with the high cost per kilogram of launching things in-
to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being
economically viable for power of the Earth,it's a tough go,"he says.
Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view
to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says.
A patent the company has won describes ways to reduce the system's weight,including using inflatable mir-
rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.
But using mirrors introduces other challenges,including keeping the solar cells from overheating,says
Schwartz."You have to take care of heat dissipation（散发）because you're now concentrating a lot of energy
in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-
tors to help keep them cool.
Though Boerman says the company believes it can make space-based solar power work,it is not expec-
ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use
of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of
renewable energy sources,"he says.Solaren is going to design 200 solar-power satellites.
A:Right
B:Wrong
C:Not mentioned答案：C解析：根据短文第二段可知，太阳能卫星会使用无线电波将能源发送到地球上的接收站。
短文在第一段中讲太平洋天然气和电力公司将购买200兆瓦的从太阳能电站的卫星上 发送来的电力时提到了200这个数字。
短文在第三段末尾提到：地球上的太阳能电池只能在白天且无云的时候收集阳光。
根据短文第四段可知，在太空的太阳能工厂必须努力克服的问题是：向太空每发射一 千克的物品都要付出高昂代价，即成本高的问题。
根据短文第五段的最后一句可知答案。
根据短文最后一段可知，从太空中获得的太阳能并不会挤掉其他形式的可再生能源。
短文主要围绕美国，尤其是加州来说，并没有提到其他国家的情况。 -
第16题：
共用题干
California Gives Green Light to Space Solar Power
Energy beamed down from space is one step closer to reality,now that California has given the green
light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts（兆瓦）of power
beamed down from solar-power satellites beginning in 2016.But some major challenges will have to be
overcome if the technology is to be used widely.
A start-up company called Solaren is designing the satellites,which it says will use radio waves to beam
energy down to a receiving station on Earth.
The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo-
synchronous（与地球同步的）orbit. Earth-based solar cells , by contrast , can only collect sun light during day-
time and when skies are clear.
But space-based solar power must grapple（努力克服）with the high cost per kilogram of launching things in-
to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being
economically viable for power of the Earth,it's a tough go,"he says.
Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view
to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says.
A patent the company has won describes ways to reduce the system's weight,including using inflatable mir-
rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.
But using mirrors introduces other challenges,including keeping the solar cells from overheating,says
Schwartz."You have to take care of heat dissipation（散发）because you're now concentrating a lot of energy
in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-
tors to help keep them cool.
Though Boerman says the company believes it can make space-based solar power work,it is not expec-
ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use
of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of
renewable energy sources,"he says.Many countries will grant permission for the use of space-based solar power soon.
A:Right
B:Wrong
C:Not mentioned答案：C解析：根据短文第二段可知，太阳能卫星会使用无线电波将能源发送到地球上的接收站。
短文在第一段中讲太平洋天然气和电力公司将购买200兆瓦的从太阳能电站的卫星上 发送来的电力时提到了200这个数字。
短文在第三段末尾提到：地球上的太阳能电池只能在白天且无云的时候收集阳光。
根据短文第四段可知，在太空的太阳能工厂必须努力克服的问题是：向太空每发射一 千克的物品都要付出高昂代价，即成本高的问题。
根据短文第五段的最后一句可知答案。
根据短文最后一段可知，从太空中获得的太阳能并不会挤掉其他形式的可再生能源。
短文主要围绕美国，尤其是加州来说，并没有提到其他国家的情况。 -
第17题：
资料：“Our cars are for people who want something different.”
This has been the slogan for over 50 years of Suprema Cars, a manufacturer of an English sports car. The car is mostly handmade in the company's factory in northern England. Suprema Car produces approximately 500 cars a year. About 5 years ago, the company began to lose sales and market share, and in the last two years, it has made a loss.
Recently, there have been problems with the labor force. The factory workers have demand higher wages and better working conditions. They are also unhappy because the management is insisting that they increase production, but the workers think this will have a bad effect on the quality of the cars.
The company still has many loyal customers. People buy Suprema sports cars because they are handmade and have an image of quality and craftsmanship.
Why do some customers still stick to Suprema Cars?A.Because its products are handmade and qualified.
B.Because its name represents luxury.
C.Because the company is famous.
D.Because its products are cheap.答案：A解析：本题的问题是“为什么一些顾客仍然坚持选择Suprema汽车？”。选项A意为“因为它的产品是手工制作、质量过硬”；选项B意为“因为它的名字代表奢华”；选项C意为“因为公司很有名”；选项D意为“因为它的产品很便宜”。根据主题句可知，因为它的产品是手工制造而且质量精良，故选A。 -
第18题：
单选题Oil is a nonrenewable resource, whereas sunshine is limitless. So why not run cars on solar power? Because a car powered by solar collecting panels would be fine on a sunny day, but as soon as the sun went behind a cloud, the car would no longer function. Which of the following is presupposed in the argument against running a car on solar power?ASolar power is cleaner than fossil fuels, and it involves less geopolitical risk.
BIn most of the northern hemisphere, it can be expected that more than 150 days a year will be cloudy.
CNo system exists for storing solar energy for a car’s use when the car is not in direct sunlight.
DNo one has yet introduced a commercially viable process for mass-producing solar cells that convert more than 10 percent of incoming sunlight into usable energy.
EConsumers accustomed to the rapid acceleration of gasoline-powered cars will not accept the weak acceleration of solar-powered cars.
正确答案： C解析：
文段中提到，只要太阳一下山太阳能轿车就无法使用，可以推断得出此结论的前提是：不存在某种太阳能存储装置，故本题应选C项。 -
第19题：
单选题She drove so fast at the turn that the car almost went ______ the road.Aon
Balong
Cfrom
Doff
正确答案： A解析：
本题考查介词辨析。句意：她在拐弯处开得如此之快以致于车子几乎偏离了道路。off the road离开道路，符合语境。on the road在路上；along the road沿着道路；from the road从这条路走过。因此，本题的正确答案为D。 -
第20题：
单选题Would you mind if I use your car? Of course not.（）AI'm sorry I can't
BI'm afraid not
CIt's over there
DI have no car
正确答案： D解析： 暂无解析 -
第21题：
单选题—Why did the car hit the boy?—Because the driver ______ on the phone at that time.Atalk
Bis talking
Cwas talking
Dhave talked
正确答案： B解析：
句意：——为什么那辆车撞到了那个小男孩？——因为司机那时候正在打电话。本题考查动词时态。根据问句中的did和答语中的at that time可知时态为过去进行时。故选为C项。 -
第22题：
单选题You are transferring fuel from the storage tanks to the day tanks by means of an electric fuel oil transfer pumpIf the pump motor catches fire, you would FIRST （）.Asecure the fuel manifold
Bshut off power to the pump
Cshut off the power ventilation
Dspray water on the fire
正确答案： D解析： 暂无解析 -
第23题：
单选题The driver stopped his car so abruptly that he was hit by the cab right behind him.Aimpolitely
Bviolently
Csuddenly
Dmaladroitly
正确答案： C解析：
句意：这位司机停车太突然，以至于被在他后面行驶的出租车撞到。abruptly突然地，唐突地。suddenly突然地。impolitely无礼地，没规矩地。violently激烈地；暴力地。maladroitly不灵巧地。 -
第24题：
单选题A sidereal day is shorter than a solar day. This difference is due to（）.Airregularities in the daily rotational rate of the Sun
Bthe space motion of the solar system
Cthe precession of the equinoxes
Dthe use of different reference points
正确答案： D解析： 暂无解析