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
Scientists claim that air pollution causes a decline in the world’s average air temperature. In order to prove that theory, ecol
Scientists claim that air pollution causes a decline in the world’s average air temperature. In order to prove that theory, ecol
admin
2010-07-06
58
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 Indies, in April 1815. The largest recorded volcanic eruption, Tambora threw 150 million tons of fine ash into the stratosphere. The ash from a volcano spreads worldwide in a few days and remains in the air for years, It’s effect is to mm 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 4.50 ℃. 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 causes and effect, by the time the world agricultural commodity community had deteriorated, no one realized the cause.
Ecologists today warn that we face a twofold menace. The ever-present possibility of volcanic eruptions, 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 increasingly colder weather.
According to the passage, the effects of Tambora’s eruption were______.
选项
A、of several days’ duration worldwide
B、felt mainly in the Dutch East Indies
C、evident in the decreased world temperature
D、immediately evident to the world’s scientists
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/sbDd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
WhatcanbesaidaboutthereportbytheNationalAcademyofSciences?
YouwillhearaspeechbyBobChase,PresidentoftheNationalEducationAssociation(NEA)totheAmericanAssociationofColleges
OfficialsinTampaFlorida,gotasurpriserecentlywhenalocalfirmbuildingthestate’sfirstethanol*-productionfactoryp
OfficialsinTampaFlorida,gotasurpriserecentlywhenalocalfirmbuildingthestate’sfirstethanol*-productionfactoryp
TherecentsocialandeconomicchangesintheUShavegreatimpactonalltheAmericanhousingsystem.
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
Somepeopleprefertoplanactivitiesfortheirfreetimeverycarefully.Otherschoosenottomakeanyplanatallfortheirfr
Muchhasbeenwrittenaboutthepotentialformanagementtobecomeisolatedfromcustomersandemployees.Thisphenomenonoften
WhoisBarbaragoingtoshopwith?
WhoisBarbaragoingtoshopwith?
随机试题
下列不属于化疗联合用药原则的是()
下列描写中属于场面描写的有
健康教育活动的核心是
背景资料:某机电设备安装公司经邀请招标投标,获得某10000t/d水泥熟料生产线的机电设备安装工程的总承包资格,并与业主签订了施工合同。合同规定了工程范围、工期、质量标准、安全环境要求。其中质量标准和要求按部颁标准执行,主要材料如钢材、电缆、φ50以上的
某石油储备库最大原油储罐为(10×104)m3的外浮顶油罐,油罐直径80m,罐高21.80m,储罐保护采用固定式低倍数泡沫灭火系统和冷却水系统。低倍数泡沫灭火系统采用6%水成膜泡沫混合液,罐壁顶喷放,冷却水环管布置在二道抗风圈和三道加强圈的下侧,总计流量为
景区讲解员上岗前应做好的物质准备工作不包括()。
薪酬体系设计要体现薪酬的基本职能,主要包括()。
1997年9月,中国共产党第十五次全国代表大会在北京举行,把()确立为党的指导思想。
《刑法》第385条规定:“国家工作人员利用职务上的便利,索取他人财物的,或者非法收受他人财物,为他人谋取利益的,是受贿罪。国家工作人员在经济往来中,违反国家规定,收受各种名义的回扣、手续费,归个人所有的,以受贿论处。”试说明:如何理
在VisualFoxPro中,"表"是指
最新回复
(
0
)