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
If the sun has enough power to warm and light the whole earth, it must have enough power to do other things, too.【61】Can we use
If the sun has enough power to warm and light the whole earth, it must have enough power to do other things, too.【61】Can we use
admin
2010-06-30
55
问题
If the sun has enough power to warm and light the whole earth, it must have enough power to do other things, too.【61】
Can we use the sun’s aboundant energy to supply electricity, or at least to perform the functions which electricity or other types of power usually perform? The answer is yes.
【62】
For example people have for many years been using the reflected heat of the sun to cook by. Solar cookers have been built with several curved mirrors reflecting the sun and focusing its heat on the cooking element.
This apparatus can be used just like a gas or electric stove; it is more expensive to make but it does not need any fuel, and so costs nothing to use. Another possibility of using solar energy is in househeating.
【63】
The form of energy we use most is electricity , and every day more is needed. But electricity has to be made, too, and to make it huge quantities of fuel are required--oil, coal, gas and nowadays even uranium.
The question which worries everyone today is: how long will these fuels last? 【64】
Nobody knows for sure, but most experts think it will soon be difficult to obtain sufficient electricity from these sources. It is possible that the sun can make a contribution here, too.
【65】
Solar power has already been used to produce terrific heat. In Southern France a solar furnace has been built, where temperatures reach more than 3000°Centigrade.
This furnace is only used for experiments at present, but could be used to produce steam for a power station.
So it is possible that one day in the near future we will depend on solar furnaces and power stations to provide our electrical needs. Or perhaps each home will have, a solar generator to pro vide power for lighting and heating.
【61】
选项
答案
我们是否能利用太阳的丰富能源来发电,或至少是用它来做电力或别种动力通常所做的事呢?答案是肯定的。
解析
转载请注明原文地址:https://kaotiyun.com/show/OjJd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
"Themoregadgetsthereare,the【C1】______thingsseemtoget."saidHonoreErvin,co-authorofTheEtiquetteGirls:ThingsYouN
A、Becauseitwillhelpkeepyourenergyfortheday’swork.B、Becauseitwillhelpyoutocontrolyourtemperearlyintheday.
WiththerapiddevelopmentoftheInternet,moreandmorepeoplehaveaccesstoitforinformation,entertainmentandeveneduca
Humansareforeverforgettingthattheycan’tcontrolnature.Exactly20yearsago,aTimemagazinecoverstoryannouncedthat
Humansareforeverforgettingthattheycan’tcontrolnature.Exactly20yearsago,aTimemagazinecoverstoryannouncedthat
Onlythreestrategiesareavailableforcontrollingcancer:prevention,screeningandtreatment.Lungcancercausesmoredeaths
Intheworldofentertainment,TVtalkshowshaveundoubtedlyfloodedeveryinchofspaceondaytimetelevision.Andanyonewho
EmilyDickinsonwasanineteenth-centuryAmericanwomanwholivedherlifecompletelyunknowntoanyoneexceptherfamilyanda
EmilyDickinsonwasanineteenth-centuryAmericanwomanwholivedherlifecompletelyunknowntoanyoneexceptherfamilyanda
experiments
随机试题
与X线照片产生灰雾的原因无关的是
溴酸钾法测定异烟肼含量的方法
财务报表是指对企业财务状况、经营成果和现金流量的结构性描述,是反映企业某一特定日期财务状况和某一会计期间经营成果和现金流量的书面文件。在利润表中,纳入分部报表的各个部分最多有()个。
下列股票属于成长型股票的是()。
一般情况下,基金份额价格与资产净值呈反向关系,即资产净值增长,基金价格降低。尤其是开放式基金,其基金份额的申购或赎回价格都直接按基金份额资产净值来计价。( )
甲公司20×8年发生的部分交易事项如下:(1)20×8年4月1日,甲公司对9名高管人员每人授予20万份甲公司股票认股权证,每份认股权证持有人有权在20×9年2月1日按每股10元的价格购买1股甲公司股票。该认股权证不附加其他行权条件,无论行权日相关人员是否
360度全息成像技术广泛应用于体育赛事直播中,可以实现影像与实物的结合,图3所示的足球比赛直播画面,主要应用的技术是()。
慈善事业是一种有益于社会与人群的社会公益事业,是政府主导下的社会保障体系的一种必要的补充。慈善事业是在政府的倡导或帮助、扶持下,南民间的团体和个人自愿组织与开展活动的,对社会中遇到灾难或不幸的人,不求回报地实施救助的一种无私的支持与奉献的事业。慈善事业实质
设A是n阶矩阵,证明方程组Ax=b对任何b都有解的充分必要条件是|A|≠0.
Thatisinobviouscontrasttothewaythingswere.
最新回复
(
0
)