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
A、They were evident in the decreased world temperature. B、They were of several days’ duration worldwide. C、They were felt mainly
A、They were evident in the decreased world temperature. B、They were of several days’ duration worldwide. C、They were felt mainly
admin
2009-04-23
50
问题
Scientists claim that air pollution causes a decline in the world’s average air temperature. In order to prove that theory, ecologists have turned to historical data in relation to especially huge volcanic eruptions. They suspect that volcanoes effect weather changes that are similar to air pollution.
One source of information is the effect of the eruption of Tambora, a volcano in Sumbawa, the Dutch East In- dies—the former name of the Republic of Indonesia—in April 1815. The largest recorded volcanic eruption, Tambora threw 150 million tons of fine ash into the sky. The ash from a volcano spreads worldwide in a few days and re- mains in the air for years. Its effect is to turn incoming solar radiation into space and thus cool the earth. For example, records of weather in England show that between April and November 1815, the average temperature had fallen 4.5 F. During the next twenty four months, England suffered one of the coldest periods of its history. Farmers’ records from April 1815 to December 1818 indicate frost throughout the spring and summer and sharp decreases in crop and livestock markets. Since there was a time lag of several years between cause and effect, by the time the world agricultural commodity community had deteriorated, no one realized the cause.
Ecologists today ware that we face a twofold menace. The ever-present possibility of volcanic eruption, such as that of Mt. St. Helens in Washington, added to man’s pollution of the atmosphere with oil, gas, coal, and other polluting substances, may bring us increasingly colder weather.
选项
A、They were evident in the decreased world temperature.
B、They were of several days’ duration worldwide.
C、They were felt mainly in the Dutch East Indies.
D、They were immediately evident to the world’s scientists.
答案
A
解析
What’s true about the effects of Tambora’s eruption according to the passage?
转载请注明原文地址:https://kaotiyun.com/show/hjpK777K
0
大学英语六级
相关试题推荐
Researcherssaypeopletravelingintrafficarethreetimesmorelikelytosufferaheartattack.Theysaytheriskofahearta
Whenwearenotsatisfiedwithapurchase,thevastmajorityofusfailtocomplaintothecompanyorbusinessinquestion.
ThecostoftravelingaroundtheeightEuropeancountriescanrunashigh_____$2,000.
EnglishforCambridgeExaminationThiscoursepreparesnon-nativespeakersfortheinternationallyrecognizedFirstCertific
A、Thewomanhasboughtafewthingsfortheman.B、ThewomanhasboughtalotofthingsforMary.C、Thewomanhasboughtnothing
What’sPeterJohnson’spositioninthecompany?Heisthe______Manager.
Thefollowingisanadvertisement.Afterreadingit,youshouldcompletetheinformationbyfillingintheblanksmarked46thro
Thefollowingisanadvertisement.Afterreadingit,youshouldcompletetheinformationbyfillingintheblanksmarked46thro
Thefollowingisanintroductiontoacompany.Afterreadingit,youarerequiredtocompletetheblanksbelowit(NO.46throug
Familyget-togethersareagreatwayforfamilymemberstounderstandthelivesofeachotherandstrengthenfamilybonds.Fory
随机试题
A.砒霜B.洋地黄毒苷C.丁丙诺啡D.地西泮属于毒性西药品种的是
某初孕妇,32岁。妊娠38周。腹部触诊:宫底部可触及圆而硬胎儿部分,腹部右侧凹凸不平,左侧相对平坦,胎心音在脐上左侧听得最清楚。该孕妇的胎儿胎位最可能是
有关房间的开口与通风构造措施对自然通风的影响,下述哪条不正确?(2008,46)
砖板衬里的优点不包括()。
材料: 中班馨馨的左手臂先天发育不良,协调能力和运动能力都低于其他幼儿,但馨馨很喜欢唱歌跳舞,可每当要登台表演时,她都会默默地退出。幼儿园一年一度的艺术节就要开幕,王老师特意编排动作与队形相对简单的舞蹈“蓝精灵”,鼓励馨馨加入。排练中,连续几个八拍跳下
当我们治理骚扰短信时,首先需要面对的问题是,我们在治理谁?对于短信内容提供者。他们的责任当然应该追究,但骚扰短信全面________,电信运营商在监管上失职,甚至私下串通、勾结(频繁曝出电信运营商地方分公司为垃圾短信发送提供便利)的责任也是________
实用无线电报系统的发明者是()。
API
二维表由行和列组成,每一列都有一个属性名被称为______。
Whatisthemaintopicofthisreport?
最新回复
(
0
)