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
Recently scientists have been【1】and perfecting other sources of energy: nuclear or atomic power, solar (sun) power, and syntheti
Recently scientists have been【1】and perfecting other sources of energy: nuclear or atomic power, solar (sun) power, and syntheti
admin
2012-02-18
58
问题
Recently scientists have been【1】and perfecting other sources of energy: nuclear or atomic power, solar (sun) power, and synthetic (manmade) fuels. Nuclear power can offer some【2】, but fear of contamination【3】its use. The Three Mile Island【4】in Pennsylvania in 1979, when atomic waste material escaped【5】atmosphere, limited power plant construction【6】【7】, scientists are doing research to discover other sources of fuel.【8】, some scientists have added alcohol to gasoline to conserve fuel.【9】, this research is still in the developmental【10】
The sun, from which nearly all energy【11】, is another solution【12】the energy crisis. Solar power is growing rapidly in popularity. All other fuels will【13】out after a period of years; the sun’s power is limitless.【14】burning any fuel—oil, coal, or wood—causes pollution, solar energy does not.【15】, no nation on earth has a corner【16】the solar market;【17】, no country has control 【18】the sun. Although solar energy is increasing in popularity, it is still impractical and very expensive, and【19】not widely used.
One immediate and viable (practical) solution, to the problem is conservation. We now have federal regulations【20】the winter temperature in public buildings to 65 degrees.
选项
A、time
B、course
C、stage
D、progress
答案
C
解析
developmental stage意为“开发阶段”。
转载请注明原文地址:https://kaotiyun.com/show/FonO777K
0
考博英语
相关试题推荐
WriteacompositiononthetitleToStoptheGolden-weekHoliday?basedonthefollowingoutline.Yourcompositionshouldbein
Theemployeestriedtoavoideveryriskthatmight______herdispleasureduringthefirstmonthaftershewasdivorcedbyherh
TheLondonterroristattacksonJuly7andJuly21changedBritishPrimeMinisterTonyBlair.Hehadlongbeenreluctanttomake
Therearethreebodiesofwritingthatcometo______thisquestionandwewillconsidereachinturn.
Sometelevisionprogramshavetobefundamentallychangedonaccountofanindustrial______.
Computersarepermeatingalmosteveryaspectofourlives,includingmanyareaspreviouslyuntouchedbytechnology.【B1】Butunl
Itisveryplainthatsuchalifeasthisisfarmore______tohealththanthatofthemanwhocanaffordlittleleisureforne
She,ontheotherhand,whenconsideringthesituation,hada______ofdangerandutteredasevere
TheAleuts,residingonseveralislandsoftheAleutianChain,thePribilofislands,andtheAlaskanPeninsula,havepossesseda
Theprodigalsonspenthismoneyextravagantlyandsoonafterhelefthomehewasreducedtoabeggar.
随机试题
结核性腹膜炎手术治疗的指征不包括
当归主要含有黄连主要含有
某患者明晨将行冠状动脉搭桥手术,今晚影响其睡眠的首要因素最可能是
接入网是由()的一系列传送实体组成的。
在通常情况下,脑组织的能量来源于()。
下列不属于哺乳类的动物是()。
养生保健是一门科学性很强的学问,要因人、因地、因时而异。社会上流行很广且被多数人追捧的养生保健方法,不一定适合自己。因为,每个人的养生方法都要依据其生命体征、当时的健康状况和环境条件来定,时间、地点、条件变了,人的状态变了,养生方法也要随之相应改变。这段文
面对能源危机,一些国家开始寻找替代能源,使用玉米加工车用乙醇汽油已不再是新鲜事了。因此不少人认为,使用玉米生产能源,既可以消化库存的陈化粮,又发展了石油替代能源,这将是未来能源发展的趋势之一,是利国利民的一项政策。下列哪项如果为真,不能削弱上述结
设f(x)是以l为周期的周期函数,则之值()
【B1】【B14】
最新回复
(
0
)