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
Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasin
Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasin
admin
2010-10-14
15
问题
Since about 1800, near the beginning of the industrial revolution, coal, petroleum and gas have been used at a rapidly increasing rate. The supply of these【C1】______is limited and electric power is very【C2】______in many places. Some scientists believe solar energy is the only【C3】______that can meet the world’s enormous【C4】______for power. Great progress had been made harnessing the sun. Not only is the sun now used in cooking, 【C5】______it also supplies power for【C6】______things as beacon lights for ships and airplanes. It【C7】______telephone lines, portable radios, electric clocks, hearing aids, and even communication satellites. Some homes and office buildings in U. S. A. are now being【C8】______with solar energy. The three most【C9】______types of solar equipment so far are the furnace, the still(蒸馏器)and the cell. Solar furnaces heat water or air,【C10】______is then circulated through a building to make it comfortable. Solar stills are【C11】______important because they can provide【C12】______water at a relative cheap rate. Salt can easily be【C13】______from sea water with solar still. The most highly developed type of solar【C14】______equipment is the solar cell. Some cells are so【C15】______that they can turn 16% of the energy they receive from the sun【C16】______electric energy. One of the cell’s biggest advantages is【C17】______it can be made either small enough to carry【C18】______large enough to produce current that can run an automobile. Besides, it has a very long life. It is still too expensive for the【C19】______consumer but when ways are【C20】______to produce it more cheaply, we can expect its use to be widely-spread.
【C1】
选项
A、materials
B、metals
C、reserves
D、fuels
答案
D
解析
从前文的coal,petroleum和gas得知这些均属燃料,故选fuel。reserve指“储量”,此处不合题意。
转载请注明原文地址:https://jikaoti.com/ti/OFAFFFFM
0
大学英语四级
相关试题推荐
A、Anartmuseum.B、Abeautifulpark.C、Acollegecampus.D、Anarchitecturalexhibition.C女士告诉男士说自己喜欢这个校园,到处是大树、绿色的草坪等,真是太漂亮了;男士认
Troubledbythepersistentlypoorgraduationratesofbasketballandfootballplayers,theNationalCollegiateAthleticAssociat
Thepersons______(对孩子们影响最大的)aretheirteachers。
Incolonialtimeswomenprovidedhealthcarefortheirfamiliesandneighbors.Doctorswereoftennot【S1】______,andatthattim
AlanGreenspan:theMostPowerfulGuyWiththeAmerican’sMidtermElectionsover,andanewCommander-in-Chiefabouttostep
A、Heisusedtothecoldweather.B、Heexpectedtheweathertobewarmer.C、HehasneverlikedtheweatherinApril.D、Hedidn’t
Sincewearesocialbeings,thequalityofourlivesdependsinlargemeasureonourinterpersonalrelationships.Onestrengtho
It’shotnowinAfghanistan,where35%ofthepopulationisunder-fed.Butsoonitwillbecold,andmanyofthecountry’sroads
A、Jimisatameetingnow.B、Jim’sroommateisout.C、Jimhasmovedtoanotherroom.D、Jimiswithhisgirlfriendnow.D推理判断题。选项
TherearemanytheoriesaboutthebeginningofdramainancientGreece.Theonemostwidelyacceptedtodayisbasedontheassum
随机试题
下列选项中,性味甘平的药物有
A.骨肉瘤B.鳞状细胞癌C.恶性淋巴瘤D.纤维肉瘤E.鼻咽癌常用甲氨蝶呤化疗的肿瘤为
疾病发生的内在依据是
慢性肾小球肾炎的理想血压控制目标为
某男,36岁。大热渴饮,头痛如劈,狂躁干呕,神昏谵语,身发斑疹,舌降唇焦,脉沉细而数。治疗当首选
设备监理目标的()表明按照承包合同、国家的技术规范和质量标准、劳动生产定额及经济参数制定的目标值是可行的、合理的。
板式楼梯的优点是( )。
如果公积金个人住房贷款的借款人违反了借款合同的约定而没有及时、足额地偿还贷款本息,逾期90天以内的,贷款银行一般采取的催收措施为()。
()是指贷款人根据借款人的提款申请和支付委托,将贷款资金交付给符合合同约定用途的借款人交易对象。
叶老师班里的学生早上经常迟到,同事们建议他采取罚款的办法,叶老师没有这样做,而是耐心地与学生交流,帮助他们改正缺点。这说明叶老师能够做到()。
最新回复
(
0
)