首页
登录
职称英语
[originaltext] Scientists claim that air pollution causes a decline in the w
[originaltext] Scientists claim that air pollution causes a decline in the w
游客
2023-09-16
10
管理
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、There was a long interval between cause and effect.
B、The weather was difficult for us to forecast.
C、Weather forecast was inaccurate.
D、Ecologists didn’t appear until modern times.
答案
A
解析
Why didn’t any one realize the cause of the deterioration of the agricultural market?
转载请注明原文地址:https://www.tihaiku.com/zcyy/3017933.html
相关试题推荐
Scientistsfindthathard-workingpeoplelivemuchlongerthanaveragemena
Whatarethereinoursocietynowadays?Thereare______.[br][originaltext]
Whatarethereinoursocietynowadays?Thereare______.[br][originaltext]
Whatarethereinoursocietynowadays?Thereare______.[originaltext](16)
[originaltext]W:Paul,youaremovingtoNewYork?M:Yeah.W:Why?M:(6)Becaus
[originaltext]M:Hi,canIhelpyou?W:Yes,Ilikethismattress.Itseemspre
[originaltext]M:Ilikethegreencoat,butitcoststwiceasmuchasthatblue
[originaltext]M:Ilikethegreencoat,butitcoststwiceasmuchasthatblue
[originaltext]M:Ilikethegreencoat,butitcoststwiceasmuchasthatblue
[originaltext]M:Ilikethegreencoat,butitcoststwiceasmuchasthatblue
随机试题
组织内部环境因素不包括()。A.组织资源 B.组织文化 C.组织人员
()是ISO9000族标准的核心和灵魂。A.顾客满意和持续改进 B.持续改进
银行卡分为信用卡和借记卡,其区别有()。A.是否可以透支 B.是否收取利息
具有补肾壮阳,祛风除湿功效的药物是A.肉苁蓉 B.锁阳 C.补骨脂
医疗机构在药品验收时必须进行内在质量检验的是A.进口药品 B.麻醉药品 C.
尿中含有大量胆红素提示A.单纯性胃炎 B.十二指肠溃疡 C.黄疸型肝炎 D
在委托开发合同中,除合同另有约定外,委托开发完成的发明创造,申请专利的权利属于:
2020年,全国集成电路出口单价约为多少元/个?A.5.2 B.4.3
《城市工程管线综合规划规范》属于现行城乡规划技术标准体系中的()。A.综合标准
M市市政府下大气力建设该市的中小企业园区.使M市的中小企业数量有了很大增长,并使
最新回复
(
0
)