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
外语
The Effects of Global Warming on Weather There are hidden factors which scientists call “feedback mechanisms”. No one know
The Effects of Global Warming on Weather There are hidden factors which scientists call “feedback mechanisms”. No one know
admin
2010-01-14
79
问题
The Effects of Global Warming on Weather
There are hidden factors which scientists call “feedback mechanisms”. No one knows quite how they will interact with the changing climate. Here’s one example: plants and animals adapt to climate change over centuries. At the current estimate of half a degree centigrade of warming per decade, vegetation (植物) may not keep up. Climatologist James Hansen predicts climate zones will shift toward the poles by 50 to 75 kilometres a year—faster than trees can naturally migrate. Species that find themselves in an unfamiliar environment will die. The 1000-kilometer-wide strip of forest running through Canada, the USSR and Scandinavia could be cut by half. Millions of dying trees would soon lead to massive forest fires, releasing tons of CO2 and further boosting global warming.
There are dozens of other possible “feedback mechanism”. Higher temperatures will fuel condensation and increase cloudiness, which may actually damp down global warming. Others, like the “albedo” effect, will do the opposite. The “albedo” effect is the amount of solar energy reflected by the earth’s surface. As northern ice and snow melts and the darker sea and land pokes (戳) through, more heat will be absorbed, adding to the global temperature increase.
Even if we were to magically stop all greenhouse-gas emissions tomorrow the impact on global climate would continue for decades. Delay will simply make the problem worse. The fact is that some of us are doing quite well the way things are. In developed world prosperity has been built on 150 years of cheap fossil fuels.
Material progress has been linked to energy consumption. Today 75 percent of all the world’s energy is consumed by a quarter of the world’s population. The average rich-world resident adds about 3.2 tons of CO2 yearly to the atmosphere, more than four times the level added by each Third World citizen. The US, with just seven per cent of the global population, is responsible for 22 per cent of global warming.
Which of the following is the main topic of the passage?______.
选项
A、Impact of global warming on climate.
B、Prosperity and cheap fossil fuels.
C、Material progress and energy consumption.
D、Plants and animals in the changing climate.
答案
A
解析
本篇文章的主题是:A 全球变暖给气候带来的影响;B 繁荣与廉价的矿物能源;C 物质进步与能源消耗;D 气候变化过程中的动植物。
转载请注明原文地址:https://kaotiyun.com/show/ZMhd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
LoweringtheRiskofHeartDiseaseLikemillionsofotherAmericans,Icomefromafamilywithahistoryofheartdisease.Myfa
Theyhadafarbetteryieldthananyotherfarmmilesawayaroundthisyear.
AHealthProfileAhealthprofileisaportraitofallofthefactorsthatinfluenceyourhealth.Todrawyourhealthprofile,y
Diet,AlcoholLinkedtoNearlyOneThirdofCancersDietissecondonlytotobaccoasaleading【H1】ofcancerand,alongwithalc
Inthe1ststudy,studentswhostayuplate______.Mr.Taylorbelievedthatthefindingoftheirstudywouldsoon______.
MoreThan8HoursSleepTooMuchofaGoodThingAlthoughthedangersoftoolittlesleeparewidelyknown,newresearchsug
Becauseadministeringthewholecompany,hesometimeshastoworkaroundtheclock.
WaterResourceMorethanhalfofthewaterusedfordrinking,washingandirrigatingcomesfromundertheground.Thissubte
Thegamerequiresustofindouttwosimplebuteffectivewaystosolvethisproblem.
AImportanceofstayingintellectuallyactiveBEffectsofagingonaperson’srecallabilityCShort-termmemoryversuslong
随机试题
男性,33岁。半年来消瘦、多汗、易急躁,2个月来发作性心悸,来院查体:血压150/70mmHg,脉率72次/分,心律绝对不齐,心率98次/分,S1强弱不等。为明确其病因,下列哪项检查针对性最强
A.肝素B.维生素KC.阿司匹林D.链激酶E.华法林通过抑制环氧酶抑制血小板聚集的药物是
服用银翘解毒丸用送服至宝锭用
航运公司指派本单位甲船负责运送一批化学物品。由于泄漏,造成沿途地区大面积严重污染。船长发现后即向公司汇报。该公司即组织人员清除稀释沿途污染物。下列选项不正确的是()。
(2009年单项选择第34题)当一国货币对外贬值后,可起到的双重作用是()。
市场包括市场的主体和客体,市场主体通常指()。
《安全生产法》在总结我国安全生产管理经验的基础上,将()规定为我国安全生产工作的基本方针。
不通过应交税费核算的税种有( )。
秘书督查工作的特点有()。
Directions:Doyouagreeordisagreewiththefollowingstatement?Peopleneversatisfiedwithwhattheyhave.Theyalwayswant
最新回复
(
0
)