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
Today petroleum provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in powe
Today petroleum provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in powe
admin
2012-08-10
85
问题
Today petroleum provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel. Natural gas reserves could plug some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. We could fast reach an energy crisis. We need to rapidly develop sustainable solutions to fuel our future. Less-polluting renewable energy sources offer a more practical long-term energy solution. They may benefit the world’s poor too. "Renewable" refers to the fact that these resources are not used faster than they can be replaced.
The Chinese and Romans used watermills (水利磨粉机) over 2,000 years ago. But the first hydroelectric (水电的) dam was built in England in 1870. Hydroelectric power is now the most common form of renewable energy, supplying around 20% of world electricity. China’s Three Gorges Dam is the largest ever. At five times the size of the US’s Hoover Dam, its 26 turbines (涡轮机) will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China’s entire electricity demand. Surprisingly, some argue that hydroelectric dams significantly contribute greenhouse gases.
In 2003, the first commercial power station to harness tidal currents (潮汐)in the open sea opened in Norway. It is designed like windmills, but others take the form of turbines.
As prices fall, wind power has become the fastest growing type of electricity generation — quadrupling (变成四倍) worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity. Though it will be more expensive, there is more than enough wind to provide the world’s entire energy needs. Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty, and are often unpopular with residents. And turbines are not totally benign (无害的) — they can interfere with radar and leave a significant ecological footprint, altering climate and killing sea birds. Migrating birds may have more luck avoiding them. Scotland is building Europe’s largest wind farm, which will power 200,000 homes. The UK’s goal is to generate one-fifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable.
According to the last paragraph, which of the following statements about wind farms is true?
选项
A、Onshore wind farms are better than offshore ones.
B、Most residents favor wind farms.
C、Wind farms also have disadvantages.
D、Wind farms may become a spot of natural beauty.
答案
C
解析
可定位在第4段第4句至第6句:Wind farms come in onshore and offshore forms…altering climate and killing sea birds.其中第4句指出风电场有岸边和离岸两种形式,并未比较两者利弊,故A选项不正确;而第5句说因为风电场常建在美丽的自然环境中,因而不受居民们欢迎,所以B和D选项不正确。而第6句指出叶轮机会干扰雷达并影响生态环境,这些正是风电场的缺点,故C选项正确。
转载请注明原文地址:https://kaotiyun.com/show/J857777K
0
大学英语四级
相关试题推荐
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
Forthispart,youareallowed30minutestowriteashortessayentitledShouldtheUniversityCampusBeOpentoTourists?You
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencewa
A、Twoorthreedays.B、24to48hours.C、Lessthan12hours.D、Onedayandahalf.B原义转述。原文是一至两个工作日,与选项B)一致。
Theviewoveravalleyofatinyvillagewiththatched(草盖的)roofcottagesaroundachurch;adrivethroughanarrowvillagestree
A、Hefeelsangry.B、Hewantsattention.C、He’stooquiet.D、He’sverynervous.B根据这篇文章的介绍,迟到原因有两种,一种是出于愤怒和反抗意识,另一种是希望引起别人的注意(he
A、Morepeoplecometoenjoymuseums.B、Morepeoplefeartoexperiencenewthings.C、Manyoldpeoplearepuzzledbymodernexhibi
A、Ceramics.B、Chinaware.C、Kitesorpaper-cuts.D、Ancientcoins.C对话中男士说想买当地的手工艺品,女士就推荐风筝,男士认为这个主意不错,女士又推荐了剪纸,男士认为有趣,并问在哪里可以买到这些
Asafreshman,Iwillneedafewmonthsto______(逐渐熟悉这个环境).
Hefinishedalltheworkthatshouldbedoneinaweekina______day.
随机试题
应付款系统实务操作题(1)录入应付款期初余额并对账。要求以001(陈明)身份选择007账套,在应付款管理系统中录入期初单据并与总账对账。(2)录入、审核发票并生成记账凭证。要求以002(王晶)身份选择007账套,在应付款管理系统中录入审核采购发票并生
(2021年青岛联考)教育的政治功能包括()
患者,女,52岁。鱼缺失,余留牙有不同程度的牙周炎。该患者牙列缺损属于
某环保联合会对某公司提起环境民事公益诉讼,因在诉讼中需要该公司的相关环保资料,遂向县环保局提出申请公开该公司的排污许可证、排污口数量和位置等有关环境信息。申请书中载明了单位名称、住所地、联系人及电话并加盖了公章、获取信息的方式等。县环保局收到申请后,要求环
下列必然会影响到工程造价变动的因素有( )。
下列关于企业销售物流的表述错误的是()。
实施治安管理处罚,应当遵循公开、公正的原则。()
在我国,公司设立登记的主管机关是()。
分析下列句子中画线的词的词性大伙儿都认识她(西南大学2015)
(浙江大学2010年试题)ThecharacterofEuropeaneducationdemandsthatthestudentdevelop【C1】______andsocialindividuality.TheAm
最新回复
(
0
)