首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
医学
Back in 1896, the Swedish scientist Svante Arrhenius realized that by burning coal we were adding carbon dioxide to the air, and
Back in 1896, the Swedish scientist Svante Arrhenius realized that by burning coal we were adding carbon dioxide to the air, and
admin
2018-02-26
41
问题
Back in 1896, the Swedish scientist Svante Arrhenius realized that by burning coal we were adding carbon dioxide to the air, and that this would warm the Earth. But he mentioned the issue only in passing (顺便地) , for his calculations suggested it would not become a problem for thousands of years. Others thought that the oceans would soak up any extra CO
2
, so there was nothing much to worry about.
That this latter argument has persisted to this day in some quarters highlights our species’ propensity (倾向) to underestimate the scale of our impact on the planet. Even the Earth’s vast oceans cannot suck up CO
2
as quickly as we can produce it, and we now know the stored CO
2
is acidifying the oceans, a problem in itself.
Now a handful of researchers are warning that energy sources we normally think of as innocuous could affect the planet’s climate too. If we start to extract immense amounts of power from the wind, for instance, it will have an impact on how warmth and water move around the planet, and thus on temperatures and rainfall.
Just to be clear, no one is suggesting we should stop building wind farms on the basis of this risk. Aside from the huge uncertainties about the climatic effects of extracting power from the wind, our present and near-term usage is far too tiny to make any difference. For the moment, any negative consequences on the climate are massively outweighed by the effects of pumping out even more CO
2
. That poses by far the greater environmental threat; weaning ourselves off fossil fuels should remain the priority.
Even so, now it is the time to start thinking about the long-term effects of the alternative energy sources we are turning to. Those who have already started to look at these issues report weary, indifferent or even hostile reactions to their work.
That’s understandable, but disappointing. These effects may be inconsequential, in which case all that will have been wasted is some research time that may well yield interesting insights anyway. Or they may turn out to be sharply negative, in which case the more notice we have, the better. It would be unfortunate to put it mildly, to spend countless trillions replacing fossil-fuel energy infrastructure (基础建设) only to discover that its successor (替代物) is also more damaging than it need be.
These climatic effects may even be beneficial. The first, tentative models suggest that extracting large amounts of energy from high-altitude jet streams would cool the planet, counteracting the effects of rising greenhouse gases. It might even be possible to build an energy infrastructure that gives us a degree of control over the weather: turning off wind turbines here, capturing more of the sun’s energy there.
We may also need to rethink our long-term research priorities. The sun is ultimately the only source of energy that doesn’t end up altering the planet’s energy balance. So the best bet might be invest heavily in improving solar technology and energy storage—rather than in efforts to harness, say, nuclear fusion.
For the moment, all of this remains supposition (推测) . But our species has a tendency to myopia. We have nothing to lose, and everything to gain by taking the long view for a change.
According to the author, the best strategy is______.
选项
A、to counteract the effects of rising greenhouse gases
B、to develop a degree of control over the weather
C、to extract large amounts of energy from wind
D、to explore solar energy and its storage
答案
D
解析
细节题。用best strategy回到原文定位到倒数第二段:So the best bet might be invest heavily in improving solar technology and energy storage—rather than in efforts to harness,say, nuclear fusion,D选项(开发太阳能及其储备)是原文的正确改写。
转载请注明原文地址:https://kaotiyun.com/show/nxT3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
InthispartthereisanessayinChinese.Readitcarefullyandthenwriteasummaryof200wordsinEnglishontheANSWERSHEE
Justbeforedawnwereceivedacallthatanunresponsiveinfantwasbeingbroughtbyemergencymedicalservicestoourhospital.
Despitegrowingnumbersofjoggers,CanadaFitnessSurveysacrossthecountrydemonstratethatCanadiansarelessphysicallyfit
Despitegrowingnumbersofjoggers,CanadaFitnessSurveysacrossthecountrydemonstratethatCanadiansarelessphysicallyfit
Despitegrowingnumbersofjoggers,CanadaFitnessSurveysacrossthecountrydemonstratethatCanadiansarelessphysicallyfit
Ifyouarecaughtinadownpour,itisbettertorunforshelterthanwalk,researchersintheUSadvise.Thismaysoundobvious
A、Hethinksthatthere’smoredepressionamongusersoftheInternet.B、HedoubtsthereisacorrelationbetweentheInterneta
DearDr.Benjamin,CongratulationsonyournominationasUnitedStatesSurgeonGeneral.Basedonyourextraordinarycareera
Whenaforestgoesablaze,itdischargeshundredsofchemicalcompounds,includingcarbonmonoxide.
Usuallyaphysiciantravelsalot.Asaphysician,Ispendalotoftimeonplaneslisteningforthatdreaded"Isthereadoctor
随机试题
螺旋CT与传统CT的本质区别在于
药师经处方审核后,认为存在用药不适宜时,应当告知处方医师,请其确认或者重新开具处方。药师发现严重不合理用药或者用药错误,应当拒绝调剂,及时告知处方医师,并应当记录,按照有关规定报告。药师调剂处方时必须做到“四查十对”,以下对应正确的是。查用药合理性时
A.薏苡仁B.桃仁C.砂仁D.苦杏仁E.酸枣仁种子呈扁心脏形,边缘肥厚,基部左右不对称的药材是
交易日期调整的具体方法有()。
设f(x)有连续的导数,则下列关系中正确的是()。
重大危险源评价以危险单元作为评价对象。某烟花爆竹厂在进行危险单元的划分时,正确的做法是()。
全面推进依法治国永远的价值追求是()。
当旅游者提出自费参加某种娱乐活动时,导游人员一般应予以协助,帮助其购买门票。并叫出租车等,但通常不陪同前往。
在超市购物后,张林把七件商品放在超市的传送带上,肉松后面紧跟着蛋糕,酸奶后面接着放的是饼干,可口可乐汽水紧跟在水果汁后面,方便面后面紧跟着酸奶,肉松和饼干之间有两件商品,方便面和水果汁之间有两件商品,最后放上去的是一只蛋糕。如果上述陈述为真,那么,以下哪
SpecGlass______withIronSparkandisnowabletosellglasswindowsinbothlocalandinternationalmarkets.
最新回复
(
0
)