首页
登录
职称英语
What is the main idea of the news item? [originaltext] MIT chemistry professo
What is the main idea of the news item? [originaltext] MIT chemistry professo
游客
2024-12-22
33
管理
问题
What is the main idea of the news item?
MIT chemistry professor Daniel Nocera leaded research on the artificial leaf project, says he and his colleagues took their cues from plants, which are literally buzzing with electricity.
During photosynthesis, the energy in sunlight splits water molecules into hydrogen and oxygen. The hydrogen joins with carbon dioxide to make sugar, an essential fuel for plant growth.
In Nocera’s laboratory, scientists replicated that chemical process using a silicon device about the size and shape of a playing card, only thinner. It’s coated with nickel and cobalt catalysts that when exposed to water and ultraviolet light, accelerate a chemical reaction.
In laboratory experiments, Nocera’s solar cell prototype operated continuously for 45 hours without a drop in electrical output. Nocera notes that it works in any type of water. Nocera believes the artificial leaf could be especially useful as an inexpensive source of electricity for low-income populations in developing countries. The goal, Nocera says, is to make each home its own power station. He predicts a commercial version of the artificial leaf will be on the market within three years.
选项
A、Photosynthesis accelerates a chemical reaction.
B、Artificial leaf turns sunlight into electric power.
C、Hydrogen joins with carbon dioxide to make sugar.
D、Sunlight splits water molecules into hydrogen and oxygen.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3879682.html
相关试题推荐
[originaltext]M:Youarenotstillwatchingtelevision,areyou?W:Ienjoyyou
[originaltext]M:Youarenotstillwatchingtelevision,areyou?W:Ienjoyyou
[originaltext]M:Youarenotstillwatchingtelevision,areyou?W:Ienjoyyou
[originaltext]Bill:Hi,Howard.Whatareyouworkingnow?.Howard:Hi,Bill.Hi
[originaltext]Bill:Hi,Howard.Whatareyouworkingnow?.Howard:Hi,Bill.Hi
[originaltext]AstudyreleasedonTuesdaybytheAmericanCollegeofChestP
[originaltext]W:Goodmorning,Sam.M:Goodmorning,Mary,howareyou?W:Well
[originaltext]W:Goodmorning,Sam.M:Goodmorning,Mary,howareyou?W:Well
WhichofthefollowingstatementsisINCORRECT?[br][originaltext]Atthee
[originaltext]Interviewer:Onthematterofemployer-employeerelations,werea
随机试题
Someconsumerresearchersdistinguish(1)"rational"motivesand"emotional"
[originaltext]下面你将听到的是一段有关中国经济社会发展的讲话。中国的改革开放已经走过了26个年头。26年来,中国发生了翻天覆地的变化。
A.2V B.4V C.6V D.8V
机动车驾驶员张某正常行驶至某县路段,与前方驾驶载人的二轮轻便摩托车发生事故。事故
新的不良反应是指A、文献中报道的药品不良反应 B、以前未发现的药品不良反应
滨河湿地占一级流域湿地总面积比例最大的河流是:() A.淮河 B.黄河
正常人的体温在37℃左右,但各个部位的温度不尽相同,内脏温度最高,头部次之,皮肤
已知某分部工程的进度计划如下图单代号网络计划所示,图中节点表示工作,节点上方的数
从公司理财的角度看,与长期借款筹资相比较,普通股筹资的优点是()。A.筹资
(2020年真题)A公司为支付工程款,向B公司签发了一张以甲银行为承兑人、
最新回复
(
0
)