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
2023-09-11
31
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/3004797.html
相关试题推荐
[originaltext]Howmenfirstlearnttoinventwordsisunknown,inotherwor
[originaltext]Howmenfirstlearnttoinventwordsisunknown,inotherwor
[originaltext]Theworld’sfirstcompletelyautomaticrailwayhasbeenbuilt
[originaltext]Howdoyoupreserveyourfood?Let’stakeadiscussion.Someon
[originaltext]Howdoyoupreserveyourfood?Let’stakeadiscussion.Someon
[originaltext]Howdoyoupreserveyourfood?Let’stakeadiscussion.Someon
[originaltext]M:Tellusabitaboutthekindofconsumerthatyou’regoingto
[originaltext]Sciencefictionwritershaveoftenimaginedhumanbeingsgoing
[originaltext]Sciencefictionwritershaveoftenimaginedhumanbeingsgoing
[originaltext]Sciencefictionwritershaveoftenimaginedhumanbeingsgoing
随机试题
[originaltext]W:Goodevening.MynameisJennyFowlerandIwouldliketowelc
GenderInequalityInWesternsociety,traditional
受理城镇国有土地使用权申报的部门是( )。A.乡人民政府 B.乡土地所 C
下列哪种疾病可引起血块收缩不佳A.心肌梗死 B.急性化脓性感染 C.血小板减
矢状轴是A.前后平伸并与地平面平行的轴 B.左右平伸并与地平面垂直的轴 C.
()不属于评估企业在培训中所获得成果的硬性指标。A.成本节约 B.产量增加
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
皮亚杰的心理发展观认为心理起源于()。单选(A)先天的成熟 (B)动作 (
心理发展的不平衡性主要是指()。 (A)每个人的心理发展水平是不一样的 (
下列选项中,( )可以向海关办理报关注册登记. A.进出口货物收发货人 B
最新回复
(
0
)