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
2024-06-14
17
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://tihaiku.com/zcyy/3634199.html
相关试题推荐
[originaltext]M:MayIhelpyou?W:Yes,Iwouldliketoreturnthesetrousers.
[originaltext]M:MayIhelpyou?W:Yes,Iwouldliketoreturnthesetrousers.
[originaltext]W:Doesyourbrotherfeelanybettertoday?M:Heismuchbetter
[originaltext]W:Doesyourbrotherfeelanybettertoday?M:Heismuchbetter
[originaltext]W:Doesyourbrotherfeelanybettertoday?M:Heismuchbetter
[originaltext]M:Excuseme,Ithinkthere’samistakeinourbill.Wedidn’tha
[originaltext]M:Wearebothfreethisafternoon.Shallwegosurfing?W:Gosu
[originaltext]M:Wearebothfreethisafternoon.Shallwegosurfing?W:Gosu
[originaltext]M:Wearebothfreethisafternoon.Shallwegosurfing?W:Gosu
[originaltext]M:Wearebothfreethisafternoon.Shallwegosurfing?W:Gosu
随机试题
[originaltext]M:[12]Canyoutellmesomethingabouttheuniversityshuttlebus
Thethiefwhobrokeintothechurchwascaughtbecausetracesofwax,foundonh
下面能实现NAT的是()。A.DNS服务器 B.代理服务器 C.FTP
Windows中文件窗口移动时应拖动()。A、窗口边框 B、窗口任
根据旅游活动的风险程度,对旅行社、住宿、旅游交通以及我国《旅游法》规定的高风险旅
A.炒炭B.土炒C.醋制D.酒制E.姜制可增强大黄止血功效的炮制方法是
脑脊液在1~2小时内形成块状凝固见于A:蛛网膜下腔梗阻B:神经梅毒C:结核性
下列关于量化分析法的说法,不正确的是()。A:它是利用统计、数值模拟和其他定量模
提高深层淤泥质土的承载力可采取()。A.固结灌浆 B.喷混凝土护面 C
左锁骨上窝发现浅表淋巴结肿大的临床意义是什么?
最新回复
(
0
)