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
78
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、Although
B、Since
C、If
D、When
答案
A
解析
前后句意转折,句意是“尽管其他能源的燃烧都会引起污染,但太阳能不会”。
转载请注明原文地址:https://www.kaotiyun.com/show/honO777K
0
考博英语
相关试题推荐
Animportantvariableaffectingcommunicationacrossculturesisfateandpersonalresponsibility.1.Thisreferstothedegree
Onceuponatime,innovationatProcter&Gambleflowedoneway:fromtheUnitedStatesoutward.WhilethelargeCincinnati-base
AluxuryexpresstrainjumpedthetracksonabridgeineasternIndia,killingatleast50onthespot.AccordingtotheNorther
Noonegetsoutofthisworldalive,andfewpeoplecomethroughlifewithoutatleastoneseriousillness.【B1】Ifwearegiven
Realpolicemen,bothBritainandtheUnitedStateshardlyrecognizeanyresemblancebetweentheirlivesandwhattheyseeonTV—
Weallhaveoffensivebreathatonetimeofanother.Inmostcases,offensivebreathemanatesfrombacteriainthemouth,althou
InadditiontotheMandarindialects,therearesixotherChinesedialectgroups,spokenmainlyinsouthernandsoutheasternChi
Aftersomanynightsof______,Mrs.Constabledecidedthatshereallymustseeadoctor.Shecouldnotcontinuetolieawake,n
Failuretoadvertisecouldresultineitherreducedsalesandlessprofitnorlegalactions.
Thirty-onemillionAmericansareover60yearsofage,andtwenty-ninemillionofthemarehealthy,busy,productivecitizens.B
随机试题
腰椎穿刺术后抽出脑脊液检查糖定量减少见于
A.杀虫B.消积止痛C.解郁安神D.通利关节E.消肿生肌川牛膝除逐瘀通经外,还可()。
混凝土加压时,初期应慢速,后期应加快加压速度。()
历史资料研究法是收集第一手资料用以描述一个难以直接观察的群体的最佳方法。( )
根据《营业税改征增值税试点方案》的规定,在试点地区,下列各项中,属于增值税应税范围的有()。
下列叙述正确的是()。
法律的强制作用是指法律运用国家强制力制裁违法和犯罪。保障自己得以实施的作用。以下属于法律的强制手段的有()
(1999年)设求
在单CPU计算机系统中,完成相同功能的递归程序比非递归程序_________。
A、 B、 C、 D、 D软件工程包括3个要素,即方法、工具和过程。方法是完成软件工程项目的技术手段;工具支持软件的开发、管理、文档生成;过程支持软件开发的各个环节的控制、管理。
最新回复
(
0
)