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
70
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 Indies— the former name of the Republic of Indonesia—in April 1815. The largest recorded volcanic eruption, Tombora threw 150 million tons of fine ash into the sky. The ash from a volcano spreads worldwide in a few days and remains 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 4.5F. 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 warn that we face a twofold menace. The ever-present possibility of volcanic eruption, such as that of Mt. St. Helen s 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://tihaiku.com/zcyy/3018770.html
相关试题推荐
Withthework(do)______,thesescientistsbegantoplananotherresearchproject
[originaltext]M:Jane,haveyougotanoffer?W:Yes,Ihave.Iwillstartwor
[originaltext]M:Jane,haveyougotanoffer?W:Yes,Ihave.Iwillstartwor
[originaltext]M:Iattendacomputertrainingcoursetwiceaweek.Whynotjoin
[originaltext]M:Iattendacomputertrainingcoursetwiceaweek.Whynotjoin
[originaltext]W:Hello,mayIhelpyou?M:Yes,I’dliketobookaroomfortom
[originaltext]W:Hello,mayIhelpyou?M:Yes,I’dliketobookaroomfortom
[originaltext]M:Doyougoouttowork?W:Notregularly.Iworkathomemosto
[originaltext]M:Ilikethegreencoat,butitcoststwiceasmuchasthatblue
[originaltext]M:Ilikethegreencoat,butitcoststwiceasmuchasthatblue
随机试题
Inadditiontoredistributingincomes,inflationmayaffectthetotalrealin
Griceintroducedfourcategoriesofmaxims,whichofthefollowingmeansthatwe
She______thecomradestogetherandspoketothemintheoldhallofthefarmhou
以下关于图所示两结构A、B点的水平位移,正确的是( )。 A.ΔA=1.5Δ
上表中,所有直辖市的人均水资源量约为()。A.无法计算 B.
对α和β受体均有较强激动作用的药物是A、可乐定 B、肾上腺素 C、多巴酚丁胺
关于消弧装置油浸消弧线圈绝缘油诊断性试验项目缺陷定性正确的有()。(A)
变压器固定自动灭火系统全面巡视应检查设备编号、标识齐全、清晰、损坏,感温电缆完好
证券公司应当至少每月向客户提供一次准确、完整的资产管理报告。()
下列各项中,应按“利息、股息、红利所得”项目征收个人所得税的有()。A.法人
最新回复
(
0
)