首页
登录
职称英语
[originaltext] The volcanic ash from the eruption of Mount Saint Helens cert
[originaltext] The volcanic ash from the eruption of Mount Saint Helens cert
游客
2024-06-05
4
管理
问题
The volcanic ash from the eruption of Mount Saint Helens certainly caused a lot of damages, didn’t it? It did, but not as much as experts had predicted. It seems to have a beneficial effect as well. Really? But were crop losses great? Yes. However, since the weather following the eruptions was unexpectedly good, some crop yields remained steady or even increased beyond normal expectancy levels. I’m glad to hear that. But what was the beneficial effect you mentioned?
A mass destruction of various insect populations. How could the ash kill insects without affecting people too? It’s highly abrasive and quickly wears away the outer wax layer protecting insect bodies. Removal of that layer causes the insects to lose body moisture by evaporation. The result is usually fatal. How about that? Sounds like an effective yet natural insecticide.
选项
A、The conversion of volcanic waste to fertilizer.
B、The menace of currently dormant volcanoes around Mount Saint Helens.
C、The eruption of Mount Saint Helens and its effects on the environment.
D、The elimination of volcanic ash by natural means.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3621063.html
相关试题推荐
[originaltext]JoeSmithhadbeenbroughtupinanorphanage.Heenviedpeop
[originaltext]ThevolcanicashfromtheeruptionofMountSaintHelenscert
[originaltext]Centuriesago,duringtheMiddleAges,mostofthelandinEu
[originaltext]Centuriesago,duringtheMiddleAges,mostofthelandinEu
[originaltext]M:Hi,Janet,you’resoluckytobedonewithourfinalexamsand
[originaltext]M:Hi,Janet,you’resoluckytobedonewithourfinalexamsand
[originaltext]W:Hey,Neal,nowthatthemidtermsareover,abunchofusareg
[originaltext]W:Hey,Neal,nowthatthemidtermsareover,abunchofusareg
[originaltext]W:Hey,Neal,nowthatthemidtermsareover,abunchofusareg
[originaltext]Theestimatedone-fifthofchildreninLondon’sschoolswhoc
随机试题
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisfoundtovaryonly
Jimcan’tgotoschooltoday_______hisillness.A、inspiteofB、infrontofC、bec
WhatdoIexpectyoutodo?[br][originaltext]Thismusicofyoursisnotactua
Weneedvacations.Theyrechargeus,allowingustobemoreefficientallthe
[originaltext]Californiaisalandofvarietyandcontrast.Almosteveryty
Amongalltheanimals,theapeismostlikehumanbeings.Bothpeopleandapesh
A. B. C. D.
夸美纽斯提出并系统论述了班级授课制,而班级授课制思想的萌芽可以追溯到古希腊罗马时
流动性风险是()长期积聚、恶化的综合作用结果。 A.信用风险B.汇率风险
下列不属于离岸金融中心的类型的是()。A.巴哈马型中心 B.避税港型中心
最新回复
(
0
)