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
考研
Why do we along with 75 other countries—alternate between standard time and daylight time? Although many people believe it has a
Why do we along with 75 other countries—alternate between standard time and daylight time? Although many people believe it has a
admin
2016-08-02
61
问题
Why do we along with 75 other countries—alternate between standard time and daylight time? Although many people believe it has an agricultural provenance, daylight time has always been a policy meant to save energy. As Benjamin Franklin argued, if people moved up their summer schedules by an hour, they could live by "sunshine rather than candles" in the evenings.
Energy conservation was the motivation for daylight time during World Wars I and II and the oil embargo of the 1970s, and it remains so today—even though there has been little scientific evidence to suggest daylight time actually helps us cut back on electricity use.
Recently, however, we were able to conduct a study in Indiana, where daylight time was instituted statewide only in 2006. Before that year, daylight time was in effect in just a handful of counties. This change of policy offered a unique, natural experiment to measure the overall effect on residential electricity consumption. We could compare the amount of energy used by households in the late-adopting counties during the two years before they switched to daylight time with the amounts they used during the year afterward—while using counties that always practiced daylight time as a control group.
We found that daylight time caused a 1 percent overall increase in residential electricity use, though the effect varied from month to month. The greatest increase occurred in late summer and early fall, when electricity use rose by 2 percent to 4 percent.
Daylight time costs Indiana households an average of $3. 29 a year in higher electricity bills, or about $ 9 million for the whole state. We also calculated the health and other social costs of increased pollution emissions at $1.7 million to $5.5 million per year.
What explains this unexpected result? While daylight time reduces demand for household lighting, it increases demand for heating in the early spring and late fall(in the mornings)and, even more important, for cooling on summer evenings. Benjamin Franklin was right about candles, in other words, but he did not consider air-conditioners.
In regions of the United States where demand for air-conditioning is greater than in Indiana, this spike in cooling costs is likely to be even greater. Arizona, one of the hottest states, may have it right; it does not practice daylight time.
Eliminating daylight time would thus accord with President-elect Barack Obama’s stated goals of conserving resources, saving money, promoting energy security and reducing climate change. At the very least, we should abandon the notion that we are saving energy while enjoying the extra hour of sunlight on hot summer evenings.
Daylight time is used in many countries because______.
选项
A、it is an acceptable alternative for standard time
B、it is a special convention in agricultural society
C、it is considered an effective way to save energy
D、it is a practice to make best use of solar energy
答案
C
解析
根据第一段中的“…daylight time has always heen a policy meant to save energy”,C应为答案。
转载请注明原文地址:https://kaotiyun.com/show/U6oZ777K
0
考研英语一
相关试题推荐
Icametofeminismthewaysomepeoplecometosocialmovementsintheirearlyyears:outofself-interest.Igotontheequalit
WithJapan’swelfaresystembucklingunderthedemandsofanageingsociety,theworld’soldestmanapologizedyesterdayforhis
Menaregenerallybetterthanwomenontestsofspatialability,suchasmentallyrotatinganobjectthroughthreedimensionsor
Manypeopleseeremarriageasafreshnewchanceathappinesswithapartnerwhomtheyshouldhavechoseninthefirstplace.Bu
Manypeopleseeremarriageasafreshnewchanceathappinesswithapartnerwhomtheyshouldhavechoseninthefirstplace.Bu
Intheiridlemoments,historiansoccasionallyspeculateonhowtheworldwouldbedifferentifAdolfHitlerhadpassedtheentr
IntheUnitedStates,thefirstdaynursery,wasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】_____
IntheUnitedStates,thefirstdaynursery,wasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】_____
Iwon’tbemodest.IamgratifiedtodiscoverthatapaperIpennedoninequalitymadeitswayintoMattMiller’sWashingtonPos
随机试题
在驶车辆办理次年缴费手续时,须在上年11月末前办理。()
肾内具有离子感受器功能的细胞是
下列实验室检查指标中,最能反映贫血程度的是()。
( )可以使回购式债券不被冻结从而提高债券的利用效率。
下列有关风险限额管理的说法中,错误的是()。
要全面认识公有制经济的含义,公有制经济包括()。
信息维护的主要目的在于保证信息的准确、及时、安全和保密。系统维护主要包括________。
如果东北、西南的读者总数与西北、其他地区的总数相差10,000人,那么华东地区与华中地区的读者相差()人。
省政府决定开展食品安全专项整治工作,为了落实工作要求,市政府领导指示由你负责此项工作,要求组织一些人员认真筹备,务必做好落实。食品安全专项整治工作可以由多部门协同操作,作为负责人,你认为可以协同哪些部门?()
A、 B、 C、 D、 C
最新回复
(
0
)