When you're busy.it's important to give yourself time torelax．题目和参考答案——青夏教育精英家教网—

题目内容

5．When you're busy，it's important to give yourself time torelax（放松）．

分析当你忙的时候，给自己时间放松一下很重要．

解答答案：relax放松；句中位于不定式符号to的后面，用动词原形即可．

点评翻译题是考查英语的运用能力．解题时，先要标出关键短语，选用最好的表达短语或词汇；然后要注意句子结构，根据提示或句子内容选用复合句或简单句来表示；最后，要注意句子的时态．平时，要多做翻译练习，注意体会英汉的差异，这样才能写出好的译文．

练习册系列答案

16．Longer Lives for Wild Elephants
Most people think of zoos as safe places for animals，where struggles such as difficulty finding food and avoiding predators don't exist．Without such problems，animals in zoos should live to a ripe old age．
But that may not be true for the largest land animals on Earth．Scientists have known that elephants in zoos often suffer from poor health．They develop diseases，joint problems and behavior changes．Sometimes，they even become unable to have babies．
To learn more about how captivity（监禁） affects elephants，a team of international scientists compared the life spans of female elephants born in zoos with female elephants living outdoors in their native lands．Zoos keep detailed records of all the animals in their care，documenting factors such as birth dates，illnesses，weight and death．These records made it possible for the researchers to analyze 40years of data on 800African and Asian elephants in zoos across Europe．The scientists compared the life spans of the zoo-born elephants with the life spans of thousands of female wild elephants in Africa and Asian elephants that work in logging camps^（伐木场），over approximately the same time period．
The team found that female African elephants born in zoos lived an average of 16.9years．Their wild counterparts who died of natural causes lived an average of 56years--more than three times as long．Female Asian elephants followed a similar pattern．In zoos，they lived 18.9years，while those in the logging camps lived 41.7years．
Scientists don't yet know why wild elephants seem to live so much better than their zoo-raised counterparts．Georgia Mason，a biologist at the University of Guelph in Canada who led the study，thinks stress and obesity（肥胖） may be to blame．Zoo elephants don't get the same kind of exercise they would in the wild，and most are very fat．Elephant social lives are also much different in zoos than in the wild，where they live in large herds and family groups．
Another finding from the study showed that Asian elephants born in zoos were more likely to die early than Asian elephants captured in the wild and brought to zoos．Mason suggests stress in the mothers in zoos might cause them to have babies that are less likely to survive．
The study raises some questions about acquiring more elephants to keep in zoos．While some threatened and endangered species living in zoos reproduce successfully and maintain healthy populations，that doesn't appear to be the case with elephants．

72．According to the first two paragraphs，unlike other zoo animals，zoo elephantsD．
A．have difficulty eating food． B.1ive to a ripe old age．
C．are not afraid of predators． D．develop health problems．
73．Which of the following about the international scientists'research on the life spans of elephants is NOT true？（See paragraph 3）？B
A．They compared zoo elephants with wild elephants．
B．They kept detailed records of all the elephants in their care．
C．They analyzed the records of the elephants kept in zoos．
D．The zoo-born elephants they studied are kept in European zoos．
74．What do the scientists find in their research？C
A．Female elephants live longer than male elephants．
B．Female zoo elephants live longer than their wild counterparts．
C．Female zoo elephants die much earlier than their wild counterparts．
D．Elephants in zoos and those in the wild enjoy the same long life spans．
75．Which of the following does the author suggest in the last paragraph？A
A．It may not be a wise policy to keep elephants in the zoo．
B．Elephants are no longer an endangered species．
C．Zoo-born elephants should be looked after more carefully．
D．Zoos should keep more animals except elephants．

13．A flying camera？Sounds （61）impossible（possible）？Well，think again because Nixie here will change your mind．
Nixie is a wearable camera．It is very tiny （62）in size and you can wear it on the wrist．It is amazing （63）that it flies and takes pictures and videos，and comes back to you when the work is done．
（64）The camera will be smart enough to identify you and the view．It will keep you in the frame and take some amazing shots．It can help you take pictures when you are climbing rocks，skating and （65）cycling （cycle）．It can also take midair photos or even videos when you are climbing （66）cliffs （cliff）or experiencing bungee jumping．It lets you （67）enjoy（enjoy）the moment rather than worrying about capturing （拍摄）it．
If Nixie ends up （68）winning（win）Intel's"Make it wearable"competition，the product is（69）expected（expect）to release within one year with a price tag of （70）less（little）than 1，000．

20．I'll go and see you nextWednesday（星期三）．

10．We all hope those who aresuffering（遭受） from this disaster will be safe．

1．Across countryside，non-food crops are growing alongside wheat．Some are used in new alternatives to plastics and other materials，but others will simply be burned．
Burning crops is becoming more popular because it is good for the planet．Doing so is also cheaper than burning fossil fuels．As more land is devoted to non-food crop production，the economics of crops for fuel are likely to become even more favorable．
Humans have been burning such biomass-organic materials from plants or animals-since they discovered fire．But that burning fossil fuels could have catastrophic consequences has brought biomass back into fashion．
Even allowing for emissions（排放） of carbon dioxide from fuel used in planting，harvesting，processing and transporting biomass fuel，replacing fossil fuel with biomass can typically reduce greenhouse gas emissions by more than 90per cent．
Power stations around the world are experimenting with forms of biomass to add to their coal or oil，with encouraging results．Indeed，power companies could profit by turning to biomass，especially when the subsidies（补助） many governments offer for using renewable energy are taken into account．
Farmers can benefit from growing biomass．In Europe，the reduction of subsidies for certain crops is exposing farmers to market forces．Instead of being paid for whatever they produce，farmers must seek a clear demand for their product．Many believe that the demand for alternatives to fossil fuels could be just such a driver．
But while biomass offers a variety of potential alternatives，the world's infrastructure（基础设施） has developed around burning fossil fuels to such a stage that switching to biomass involves a change in conception that many companies have not accepted．
Also，there are problems with using biomass．Although most coal-fired power stations could take a small amount of their fuel from biomass without significant adjustment，few are built to run on biomass alone．Burning some forms of biomass also causes environmental problems．Oils and waste can be smelly，while wood produces smoke unless burned properly．
The supply chains for fossil fuels are set up well，but those for biomass are just the beginning．Sources of supply for biomass rely on farm production and can therefore be less reliable．They are necessarily limited and it wouldn't make sense to turn a very large amount of valuable agricultural land away from food crops．But as the world adjusts to the need to control greenhouse gas emissions，these problems may receive more attention．

67．What do we know about biomass？C
A．It is a useful way of burning crops．
B．It is a new alternative to be used widely．
C．It is plant and animal matter used to provide power．
D．It is a popular approach to fighting against pollution．
68．What are the advantages of using biomass？D
a．It gives off less greenhouse gases．
b．It helps farmers receive subsidies for what they produce．
c．It has met the clear demand for energy．
d．It has brought subsidies for some power companies．
e．It is cheaper than burning fossil fuels．
A．a，b，c B．b，c，d C．c，d，e D．d，e，a
69．For coal-fired power stations，C．
A．more effective ways to use biomass have been tried
B．using renewable energy has become their daily task
C．burning biomass alone would require considerable changes
D．setting up dependable supply channels needs governments'support
70．What is the author's attitude towards biomass fuels？A
A．Objective．B．Sceptical．C．Disapproving．D．Defensive．

18．-Let's try to get two seats near the stage．
-Listen，we will be lucky enough ______ we can get any tickets．（　　）

12．Many a person up setting off firecrackers because of heavy smog．（　　）

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