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
The night is not what it was. Once, the earth was cast half in shadow. Then came fire, candle, and light bulb, gradually drawing
The night is not what it was. Once, the earth was cast half in shadow. Then came fire, candle, and light bulb, gradually drawing
admin
2014-10-11
27
问题
The night is not what it was. Once, the earth was cast half in shadow. Then came fire, candle, and light bulb, gradually drawing back the curtain of darkness. But a brighter world has its
drawbacks
. An estimated 30 percent of outdoor lighting—plus even some indoor lighting—is wasted. Inefficient lighting costs U. S. about $ 10. 4 billion a year, according to bob Gent of the International Dark-Sky Association, a nonprofit that aims to control light pollution.
Last year, in Sydney, an estimated 2. 2 million Australians switched off their lights during "Earth Hour", briefly reducing that city’s energy use by more than 10 percent. Motivated by such trends, more than two dozen cities worldwide went dim on March 29 this year in an hour-long demonstration.
A number of groups are trying to measure light pollution and assess its effect on the environment in the hope that people will reduce their own contribution to the problem. Scientists are trying to report how many stars we can see. In dark rural areas, about 2,000 stars are typically visible at night, compared with "maybe five" in a bright city square—and about 5,000 in centuries past.
People who are working while others are star-gazing may face the greatest risks. Nighttime exposure to white light can cause the growth of tumors(肿瘤), experiments show. Two decades of research indicate that women who work at night shifts have unusually high rates of breast cancer.
On March 29 this year people in many cities around the world______.
选项
A、turned out some lights for an hour
B、organize some events to have some fun
C、held an demonstration called "Earth Hour"
D、joined together to compete with Australians
答案
A
解析
根据题干中的核心词March 29,很快找到它在原文的出处:第二段最后一句。“more than two dozen cities worldwide went dim”和其前一句中的表达可以判断went dim指的就是switched off their lights。
转载请注明原文地址:https://kaotiyun.com/show/YlxO777K
0
成人本科学位英语
相关试题推荐
______youdislikeancientbuildings,WarrickCastleisworthavisit.
-Howmuchwillit______myfatherandmetogotoChicago?-It’s120dollarsinall.
It’sinterestingthatthearrivalofsnowhastheeffectonpeopleindifferentcountries.Forsomecountriesitisanimportant
Thirtyyearsago,mostteenagershadbicycles,butnowtheyarecomparativelyrare.【C1】______,motorscooters(小型摩托车)aremuchm
Friendisbetterthanfortune.Friendisworsethanpoisoninsome【C1】______.Theabovetwostatementsareoppositeandseemt
Americanseat______vegetablesperpersontodayastheydidin1910.
Muchfamilyquarrellingendswhenhusbandsandwivesrealizewhattheseenergycyclesmeanandwhichcycleeachmemberofthefa
Itwasnotmuchfuntotravelononeoftheoldsailingships.Lifewashardforbothpassengersandcrew.(78)17thcenturysai
Thecarburnsmorefuel,but______allthingsintoconsideration,it’sstillagoodcar.
MostofthestudentsfeltratherdisappointedattheEnglishparty.Theysaythatit______betterorganized.
随机试题
Thetrainwill______fromPlatform2at3:45onTuesdaymorning.
关于新生儿生理性黄疸不正确的为
蛔虫、钩虫等在发育过程中只需要一个宿主,它们被称为
胎方位为枕左前位是指()
水运工程施工监理包括()等阶段。
损失补偿原则主要适用于()合同
某企业按年利率5.8%向银行借款1000万元,银行要求保留15%的补偿性余额,则这项借款的实际利率为()。
甲公司是国内一家大型品牌折扣连锁卖场,经过13年发展,甲公司在北京已经拥有8家实体门店,近两年,随着更多消费者的“屏幕转移”,开始利用碎片化时间在手机等移动设备上进行购物,甲公司也抓住这一消费行为的变化,启动了对全渠道零售的战略布局。为此甲公司集中各部门的
根据《物权法》的规定,下列有关最高额抵押权的表述,正确的是()。
有以下程序:#include<stdio.h>main(){inta=—2,b=0;while(a++&&++b);printf(″%d,%d\n″,a,b);}程序运行后的输出结果是()。
最新回复
(
0
)