判断题Natural systems can reduce the amount of carbon dioxide in the atmosphere caused by carbon emissions.A 对B 错
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第1题：
The effect that exhaust gas recirculation can reduce NOX formation is partly due to a reduction of the()concentration in the combustion zone and partly due to the content of water and carbon dioxide in the exhaust gas.
A.Oxygen
B.Nitrogen
C.Sulphur
D.Freon
答案：C
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第2题：
We all know that humans are damaging the environment，but what can we do about it?Some people are trying to do their bit to be more environmentally friendly.
Local councils in Britain encourage certain aspects of green living，such as recycling paper，tin，plastic and glass. They want to reduce the amount of rubbish going into landfill sites(填埋场)，because they are running out of places to dump(倾倒)rubbish. In some areas rubbish for recycling is collected from your doorstep，but in other areas，you have to take it to a special recycling place，such as a bottle bank.
Another way of reducing the amount of rubbish you create is to use reusable products instead of disposable ones. For example，some people use strong shopping bags or boxes for their groceries instead of plastic carrier bags，or use washable nappies instead of disposables.
More people are becoming interested in reducing their carbon footprint-the amount of carbon they use up. They try to reduce their carbon emissions(释放)by cycling，using public transport or an electric car，rather than driving gas-consuming vehicles. Some people choose not to fly for holiday trips because planes are the biggest producers of carbon emissions.
You can make“green”choices when buying food too. It's best to buy food which was locally grown or produced so that it hasn't been imported by air，or shipped by road from far away.
Houses can be environmentally friendly too. It takes less energy to heat a house if it has good insulation(绝缘，隔热)and double glazing(双层玻璃). You can also create your own energy if you have solar panels or a wind turbine fitted though these can be expensive. You can also save water by using a rain water container for washing the car or watering the garden. It's even possible to use a system where“grey water”-water which has been through a tap(水龙头)once already，is used to flush(冲洗)toilets. Some new housing projects are being built specifically to be as environmentally friendly as possible.
The purpose of collecting reusable wastes is to______.
A．save energy consumed in daily life
B．reduce the amount of rubbish dumped
C．create a new way of green living
D．decrease the amount of carbon produced
正确答案：B
解析：见第二段，他们想减少运往填埋场的垃圾，因为已经没有地方可以倾倒垃圾了。所以收集可再用垃圾的主要目的是为了减少垃圾倾倒。 -
第3题：
The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by ______．
A.Forming a cloud cover over the flames
B.Directing the gas at the base of the flames in a slow sweeping motion
C.Discharging the carbon dioxide into the heart of the flames
D.Bouncing the discharge off an adjacent bulkhead just above the burning surface
正确答案：B
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第4题：
Passage 2
If the population of the earth goes on increasing at its present rate, there will eventually not be enough resources left to sustain life on the planet. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on earth will make it necessary for us to look for open space somewhere else. But none of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem, however, has recently been suggested by an American scientist, Professor Carl Sagan.
Sagan believes that before the earth's resources are completely exhausted it will be possible to change the atmosphere of Venus and so create a new world almost as large as earth itself. The difficulty is that Venus is much hotter than the earth and there is only a tiny amount of water there.
Sagan proposes that algae organisms, which can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be bred in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceships will then fly to Venus and fire the rockets into the atmosphere. In a fairly short time, the algae will break down the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler, but before man can set foot on Venus it will be necessary for the oxygen to produce rain. The surface of the planet will still be too hot for men to land on it but the rain will eventually fall and in a few years something like earth will be reproduced on Venus.
On Venus there is a lot of__________.A. water
B. carbon dioxide
C. carbon monoxide
D. oxygen答案：B解析：由第--f&的最后一句话中的“there is only a tiny amount ofwater there(Venus)”得知，A选项错误。第三段结尾说明，藻类通过火箭运往金星，然后“In a fairly short time，the algae will break down the carbon dioxide into oxygen and carbon”.说明金星上有大量的二氧化碳。C和D选项错误。故选B。 -
第5题：
共用题干
Global Warming
Few people now question the reality of global warming and its effects on the world's climate. Many scientists1the blame for recent natural disasters on the increase2the world's temperatures and are convinced that,more than3before,the Earth is at4from the forces of the wind,rain and sun.5to them,global warming is making extreme weather events,6as hurricanes and droughts,even more7and causing sea levels all around the world to8.
Environmental groups are putting9on governments to take action to reduce the 10 of carbon dioxide which is given 11 by factories and power plants,thus attacking the problem at its source. They are in12of more money being spent on research into so-lar,wind and wave energy devices,which could then replace existing power13.
Some scientists,14believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow,we would have to wait15hundred years to notice the results. Global warming,it seems,is here to stay.10._________
A: amount
B: deal
C: number
D: count答案：A解析：固定搭配put the blame for…，表示“把……归咎于……”，所以B项put为正确答案。
文中the world's temperatures前需要补充一个介词，意为：在全球范围内气温的上升，因此应该在A和B两项之间选择。而at后面只可以跟某个小地点，根据文意，只有in才是正确答案。
联系上下文语境，根据句意可知作者要表达的是“以往任何时候”，因此选用 ever。其他三项均不符合句意。
固定搭配at risk，意为“濒临危险，处境危险”。
习惯用法according to sb．意为“据某人所说”，故选D。
根据句意，作者要举例子，习惯用法为such as...，因此选A.
根据句意，作者举例子是按照递进的顺序，从飓风、干旱到排在后面的是更加严重的问题。strict“严格的”, strong“强烈的”, heavy“沉重的，巨大的”，只有severe意为 “严峻的，严重的”，因此B是正确答案。
此处意为：导致世界各地的海平面上升，所以在A和C之间选择。raise意为“举起，抬起，唤起”，有主动意味，rise表示客观的上升，因此是正确答案。
联系上下文可知此句意为：环保组织在向政府施加压力，催促政府采取措施减少二氧化碳的排放量，显然pressure（施加压力）最为恰当。
根据句意，减少二氧化碳的排放量，二氧化碳是不可数名词，因此amount 是正确答案。
固定搭配give off意为“排放（气体、液体、光）等”，文中表达的是排放二氧化碳气体，故选A。而give away意为“泄露，分发”,give up意为“放弃”, give over意为“停止，交出”。
固定搭配in favour of…，意为“支持……，赞成……”，所以选C。
根据句意可知作者表达的是“发电站”，为固定词组power station.
联系上下文语境可知上文叙述了很多科学家的想法，下文转而言及另外还有一些科学家的想法，此处有转折之意，且空格在两句未完的话之间，因此选择however。
根据句意，还需要等几百年，several表示“几个”，符合句意。其他三个选项均不合适。 -
第6题：
填空题Glucose can be completely broken down into carbon dioxide and water when oxygen is present in the process called aerobic respiration.____正确答案： H解析：
根据题干信息“carbon dioxide, oxygen”可以定位到H段“When oxygen is present, glucose can be completely broken down into carbon dioxide and water in a process called aerobic respiration”，故匹配段落为H段。 -
第7题：
问答题Practice 5 The world's oceans are slowly getting more acidic, say scientists. The researchers from California say the change is taking place in response to higher levels of carbon dioxide in the atmosphere. The lowering of the waters' pH value is not great at the moment but could pose a serious threat to current marine life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of fossil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century. But these researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change. "This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere," said Dr Caldeira. "And we predicted amounts of future acidity that exceed anything we saw over the last several hundred million years, apart from perhaps after rare catastrophic events such as asteroid impacts." If carbon dioxide release continues unabated, ocean pH could be reduced by as much as 0.77 units, the authors warn. It is not absolutely clear what that means for marine life, however. Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean lifeforms may be more sensitive to pH changes. Coral reefs and other organisms whose skeletons or shells contain calcium carbonate may be particularly affected, the team speculate. They could find it much more difficult to build these structures in water with a lower pH. In recent years some people have suggested deliberately storing carbon dioxide from power stations in the deep ocean as a way of curbing global warming. But Dr Caldeira said that such a strategy should now be re-considered. "Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing — because in releasing CO2 into the atmosphere we warm the planet; and when CO2 is absorbed by the ocean, it reduces the amount of greenhouse warming.正确答案：
【参考译文】
科学家们说世界上的海洋正在慢慢变“酸”。
来自加利福尼亚的研究人员称这种变化是由于大气中二氧化碳含量过高造成的。
他们警告说,目前海水pH值下降还不是非常严重,但是如果继续下降的话会对现存的海洋生物造成严重的威胁。
来自美国罗兰士利弗摩亚国家实验室的肯·卡尔代罗和迈克尔·维克特在《自然》杂志上提出了他们对此事的关注。
越来越多的石油消耗意味着更多的二氧化碳被排放到空气中,而且大部分最终将被海水吸收。二氧化碳一旦进入水中,就会发生反应形成碳酸。
科学家们认为海洋的酸性已经比上个世纪稍微大了一点。
这些研究者们结合所知的海洋历史以及气候变化的电脑模型,试图预测将来的变化。
“如果我们继续向大气中排放二氧化碳的话,将来的酸性浓度会远远超标。”卡尔代罗博士说。
“而且我们估计将来酸的总量会比过去几亿年中人类所见到的任何东西都大,更不用说可能发生类似小行星撞击地球等罕见的大灾难之后了。”
研究者们警告说,如果不减少二氧化碳的排放量,海洋的pH值可能会降低0.77个单位。
尽管这对海洋生命来说意味着什么还不是很清楚。
大多数生物生活在海洋表面,而海洋表面正是pH值预期变化最大的地方,但是深海生物可能对pH值的变化更加敏感。
研究组推测,珊瑚礁和其它骨架或外壳中含有碳酸钙的生物受到的影响可能会格外明显,在pH值较低的水域中它们很难形成这些结构。
最近的几年中,有人蓄意建议将发电站释放的二氧化碳储藏到深海中,以此来抑制全球变暖。
但是卡尔代罗博士说现在应该重新考虑这种策略。
“以前,大多数专家都将海洋吸收二氧化碳看作一件好事——因为将二氧化碳释放到大气中会使大气变暖,然而当二氧化碳被海洋吸收后,温室效应就会降低。”解析： 暂无解析 -
第8题：
单选题As compared to carbon dioxide,dry chemical has which advantage?（）.ACleaner
BEffective
CGreater range
DMore cooling effect
正确答案： A解析： 暂无解析 -
第9题：
单选题As compared to carbon dioxide，dry chemical has which advantage?（）.ACleaner
BEffective on metal fires
CGreater range
DMore cooling effect
正确答案： D解析： 暂无解析 -
第10题：
单选题The danger associated with using carbon dioxide in an enclosed space is（）.Afrostbite
Bskin burns
Casphyxiation
Dan explosive reaction
正确答案： B解析： 暂无解析 -
第11题：
单选题Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）ABecause carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiation
BBecause carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gas
CBecause carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gas
DThis action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
正确答案： C解析： 暂无解析 -
第12题：
单选题According to the T-Boat regulations the reason for providing adequate ventilation for a battery storage area is to prevent（）.Aaccumulation of carbon dioxide gas that chokes the battery
Baccumulation of explosive and toxic gases the battery can generate
Cmildew or dry rot in the battery box
Dbattery failure including battery case meltdown caused by excessive heat
正确答案： D解析： 暂无解析 -
第13题：
Theoretical perfect combustion in a diesel engine yields by-products of_____.
A.aldehydes and carbon dioxide
B.water vapor and carbon monoxide
C.nitrogen and carbon monoxide
D.water vapor and carbon dioxide
正确答案：D
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第14题：
What could result in an incorrect oxygen concentration reading on the oxygen indicator ________．
A.Exposure to carbon dioxide for no more than 1 minute
B.Exposure to carbon dioxide for more than 10 minutes
C.Exposure to a very low concentration of sulfur dioxide for no more than 2 minutes
D.None of the above
正确答案：B
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第15题：
______, as the chemical extinguisher agent, should be used for an electric fire.
A.dry chemical or foam
B.foam or soda acid
C.carbon dioxide or foam
D.carbon dioxide or dry chemical
正确答案：D
二氧化碳或干粉灭火器作为化学灭火器，用于扑灭电器火灾。 -
第16题：
共用题干
Global Warming
Few people now question the reality of global warming and its effects on the world's climate. Many scientists1the blame for recent natural disasters on the increase2the world's temperatures and are convinced that,more than3before,the Earth is at4from the forces of the wind,rain and sun.5to them,global warming is making extreme weather events,6as hurricanes and droughts,even more7and causing sea levels all around the world to8.
Environmental groups are putting9on governments to take action to reduce the 10 of carbon dioxide which is given 11 by factories and power plants,thus attacking the problem at its source. They are in12of more money being spent on research into so-lar,wind and wave energy devices,which could then replace existing power13.
Some scientists,14believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow,we would have to wait15hundred years to notice the results. Global warming,it seems,is here to stay.2._________
A: in
B: at
C: by
D: to答案：A解析：固定搭配put the blame for…，表示“把……归咎于……”，所以B项put为正确答案。
文中the world's temperatures前需要补充一个介词，意为：在全球范围内气温的上升，因此应该在A和B两项之间选择。而at后面只可以跟某个小地点，根据文意，只有in才是正确答案。
联系上下文语境，根据句意可知作者要表达的是“以往任何时候”，因此选用 ever。其他三项均不符合句意。
固定搭配at risk，意为“濒临危险，处境危险”。
习惯用法according to sb．意为“据某人所说”，故选D。
根据句意，作者要举例子，习惯用法为such as...，因此选A.
根据句意，作者举例子是按照递进的顺序，从飓风、干旱到排在后面的是更加严重的问题。strict“严格的”, strong“强烈的”, heavy“沉重的，巨大的”，只有severe意为 “严峻的，严重的”，因此B是正确答案。
此处意为：导致世界各地的海平面上升，所以在A和C之间选择。raise意为“举起，抬起，唤起”，有主动意味，rise表示客观的上升，因此是正确答案。
联系上下文可知此句意为：环保组织在向政府施加压力，催促政府采取措施减少二氧化碳的排放量，显然pressure（施加压力）最为恰当。
根据句意，减少二氧化碳的排放量，二氧化碳是不可数名词，因此amount 是正确答案。
固定搭配give off意为“排放（气体、液体、光）等”，文中表达的是排放二氧化碳气体，故选A。而give away意为“泄露，分发”,give up意为“放弃”, give over意为“停止，交出”。
固定搭配in favour of…，意为“支持……，赞成……”，所以选C。
根据句意可知作者表达的是“发电站”，为固定词组power station.
联系上下文语境可知上文叙述了很多科学家的想法，下文转而言及另外还有一些科学家的想法，此处有转折之意，且空格在两句未完的话之间，因此选择however。
根据句意，还需要等几百年，several表示“几个”，符合句意。其他三个选项均不合适。 -
第17题：
A round trip flight from Britain to Australia produces the same amount of carbon dioxide as three average cars do in a year.A.Right
B.Wrong
C.Not mentioned答案：B解析： -
第18题：
单选题Theoretical perfect combustion in a diesel engine yields by-products of （）.Aaldehydes and carbon dioxide
Bwater vapor and carbon monoxide
Cnitrogen and carbon monoxide
Dwater vapor and carbon dioxide
正确答案： D解析： 暂无解析 -
第19题：
单选题Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?（）ALow viscosity index
BLow carbon forming tendencies
CHigh film strength
DHigh non-corrosive qualities
正确答案： A解析： 暂无解析 -
第20题：
单选题The primary purpose of the passage is to _____.Awarn of the dangers of continued burning of fossil fuels
Bdiscuss the significance of the amount of carbon dioxide in the atmosphere
Cdemonstrate the usefulness of mathematical models in predicting long-range climatic change
Ddescribe the ways in which various atmospheric and climatic conditions contribute to the Earth’s weather
正确答案： D解析：
文章第一段讲述了大气中二氧化碳的存在对于保持地表温度平衡的重要作用，接着讲述了如今由于化石燃料的燃烧，使大气中的二氧化碳增多，从而对全球气温以及人类社会的影响，主要是为了强调二氧化碳在大气中的重要作用，因此B项最符合题意。A、C、D三项在文中都有所体现，但都不是文章主旨，因此不选。 -
第21题：
单选题The supply of carbon dioxide used in the fixed extinguishing system aboard a cargo vessel MUST be at least sufficient for（）.Aall the spaces of a vessel
Ball cargo spaces
Cthe engine room and largest cargo space
Dthe space requiring the largest amount
正确答案： D解析： 暂无解析 -
第22题：
单选题According to the passage, which of the following is true of the last hundred years?AFossil fuels were burned for the first time.
BGreater amounts of land were cleared than at any time before.
CThe average temperature at the Earth’s surface has become 2℃ cooler.
DThe amount of carbon dioxide in the atmosphere has increased measurably.
正确答案： D解析：
文中第二段第二句表明，过去100年间，矿物燃料的燃烧和森林的砍伐使大气中二氧化碳的含量增加了大约15%，而且我们不断地向大气中排放二氧化碳，由此可以推断，A、B两项表述均不准确；由于大气中的二氧化碳在不断增加，因此地表温度只会升高，而不是降低，C项错误；因此只有D项符合文章大意。 -
第23题：
判断题Natural systems can reduce the amount of carbon dioxide in the atmosphere caused by carbon emissions.A对
B错
正确答案： 对解析：
录音中指出随着碳排放量的增加，空气中二氧化碳的含量从1750年以来已经增加了31%，自然通常可以把大部分碳排放吸收到海洋和森林中去，从而减少空气中碳的积累，因此题干正确。
【录音原文】
As a result of the steady rise in carbon emissions, the amount of carbon dioxide in the atmosphere has increased by 31% since l750—a rate unprecedented in the past 20, 000 years. Nature usually absorbs a large portion of these emissions in oceans and forests, known as “carbon sinks”, thereby slowing the rate of accumulation in the atmosphere. However, recent trends suggest that carbon emissions are outpacing absorption. -
第24题：
单选题Plants use the carbon, along with sunlight, for growth, and （） oxygen into the atmosphere in a process known as photosynthesis.Arelieve
Brelate
Crelease
Dretain
正确答案： C解析： 暂无解析