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
A、It costs less money. B、It can be found in lakes. C、It is more efficient. D、It is poisonous as well. A
A、It costs less money. B、It can be found in lakes. C、It is more efficient. D、It is poisonous as well. A
admin
2017-11-08
63
问题
Solar cells convert energy from the sun into electricity. The researchers have replaced a toxic compound, used to make one type of solar cell, with a chemical that is much cheaper, completely safe and works just as well.
The new compound is used to make tofu and is found in bath salts. It’s also found in sea water, and so costs much less than the poisonous chemical currently used.
Dr. Jon Major, who led the research at Liverpool University, believes that "this process could really make the difference into making it competitive with fossil fuels."
More work will need to be done to see if the cost savings found in the lab can work on an industrial scale. But the cost of solar energy has been steadily falling. And many involved in research in the field believe that it’s just a matter of time before it becomes cheaper than coal, gas and oil, and one day replaces fossil fuels entirely.
3. What’s the advantage of the new chemical according to the news?
4. How many fossil fuels have been mentioned in this news?
选项
A、It costs less money.
B、It can be found in lakes.
C、It is more efficient.
D、It is poisonous as well.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/b1a7777K
0
大学英语四级
相关试题推荐
Forthispart,youareallowed30minutestouniteashortessayentitledDoOneThingataTime,AndDoItWellbycommentingo
Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefdescriptionofthepi
Ifyouask20randomgraduatestoexplainwhytheywenttobusinessschool,alargemajoritywilllistnetworkingasoneofthe
HowsciencegoeswrongScientificresearchhaschangedtheworld.Nowitneedstochangeitself.A)Asimpleideaunderli
ConradHiltonreallywantedtobeabanker.Instead,hesuccessfullychangedthe【C1】_____purchaseofaTexaslow-endhotelinto
HowAdvertisementIsDone?A)Whenwechooseawordwedomorethangiveinformation;wealsoexpressourfeelingsaboutwha
Forthispart,youareallowed30minutestowriteashortessayentitledIsUniversityEducationUseless?followingtheoutline
杭州位于中国东南沿海,京杭大运河(Beijing一HangzhouGrandCanal)的南端,它以其西湖的美丽景观而为人们所熟知。俗话说“上有天堂,下有苏杭”,表达了古往今来的人们对这座美丽城市的由衷赞美(heartfeltadmiration)。
A、Diseasesmayspreadamongbirdsatthesameplace.B、Droppingsofotherbirdsmaybepoisonous.C、Birdswillfightforfoodan
A、Listeningtomusic.B、WatchingTV.C、Readingmagazines.D、Playingcomputergames.A录音末尾提到,当问到哪个活动最难放弃一周时,48%的人说是听音乐,25%的人说是看电视
随机试题
ACS的确诊标志物是
患者,女,65岁。恶寒发热,头痛鼻塞,倦怠无力,气短懒言,久病体弱,平时极易感冒,舌质淡,苔薄白,脉浮无力。宜用何方调治()
对肠易激综合征的诊断推荐采用国际认同的罗马Ⅱ标准,其中有关腹部不适或腹痛时间的规定是在过去12个月内至少累计达
全身淋巴结肿大提示
下列各选项中,属于省、自治区、直辖市国土资源行政主管部门调查处理的争议案件包括()。
建设有中国特色社会主义政治,就是在中国共产党领导下,在人民当家做主的基础上,以德治国,发展社会主义民主政治。()
(2010年江西.133)出租车司机王某送危重病人李某去医院,情形危急,为争取时间,王某连闯三个红灯,被交警拦截并被告知罚款,经王某解释,交警对王某未给予处罚且为其开警车引道,将李某及时送至医院。对此事件,下列哪一项表述是正确的?()
IPv6协议是为下—代互联网而设计的互联协议,其地址长度为______。
A、Theyusuallyholdsavingsaccounts.B、Theyhavecurrentaccounts.C、Theyspecializeinlong-termsavingsaccountsandmortgage
Aspirinisoneofthesafestandmosteffectivedrugsinventedbyman.Themostpopularmedicineintheworldtoday,itisanef
最新回复
(
0
)