首页
登录
职称英语
The search for a cheap alternative fuel has led American scientists to study the
The search for a cheap alternative fuel has led American scientists to study the
游客
2024-11-02
32
管理
问题
The search for a cheap alternative fuel has led American scientists to study the potential of______.
The search for a cheap alternative fuel to take the place of petroleum has led American scientists to study the potential of pond water. They are interested in a green scum known as algae that forms on the surface of stagnant pools. Helen Briggs reports from Washington: "Scientists have found a way of harnessing the natural ability of algae under certain conditions to make pure hydrogen gas from sunlight and water." The researches based in California and Colorado describe the new discovery as the equivalent of striking oil. But there are still big obstacles to be overcome. The technique’ s only been tried on a small scale in a laboratory and to be commercially viable, use of hydrogen and gas must be increased by a factor of ten. If they do manage to make the process work, perhaps in 20 years’ time, researchers say a small pond of algae could produce enough hydrogen gas to meet the weekly fuel needs for a dozen or so cars.
选项
A、sunlight
B、pure hydrogen gas
C、pond water
D、small stream
答案
C
解析
抓听住句子“The search for a cheap alternative... study the potential of pond water.”。
转载请注明原文地址:https://tihaiku.com/zcyy/3827447.html
相关试题推荐
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeople
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeople
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeople
ThesearchforacheapalternativefuelhasledAmericanscientiststostudythe
ThesearchforacheapalternativefuelhasledAmericanscientiststostudythe
ThesearchforacheapalternativefuelhasledAmericanscientiststostudythe
Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemi
Themainpurposeoftheresearchis______[br][originaltext]W:Excuseme,cou
Manygreatscientists______theirsuccesstohardwork.A、portrayB、ascribeC、im
DecadesbeforetheAmericanRevolutionof1776,JesseFish,anativeNewYo
随机试题
Accordingtothepassage,oneofthefirststepsinchoosingyourcollegeis___
[originaltext]M:WelcometoBritain.MayIseeyourpassportandpapers,please
Iaskedsuccessfulpeoplewhatthesecretoftheirsuccesswas.I【B1】______
以下投资者中,()视为当然合格投资者。 Ⅰ.社会保障基金、企业年金等养
片剂与胶囊剂要检查的项目是A.崩解时限B.溶化性C.溶散时限D.相对密度E.融变
我国21世纪初可持续发展的指导思想是( )。A:坚持以人为本,以人与自然的和谐
一、注意事项 1.本题由给定资料与作答要求两部分构成。考试时限为120分钟,其
某从事二手车经销的纳税人2020年6月以50000元的价格购入一辆二
根据《民法典》规定,一般情况下,质权自办理出质登记时设立的有()。A.汇票
甲酒店为增值税一般纳税人,主要提供餐饮服务、住宿服务、会议服务和车辆停放服务。
最新回复
(
0
)