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
52
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、It served as a fertilizer for crops.
B、It formed a new mountain.
C、It stabilized air temperatures.
D、It destroyed various insect pests.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3004799.html
相关试题推荐
[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]M:Tellusabitaboutthekindofconsumerthatyou’regoingto
[originaltext]M:Tellusabitaboutthekindofconsumerthatyou’regoingto
[originaltext]M:Tellusabitaboutthekindofconsumerthatyou’regoingto
[originaltext]W:Excuseme,Dr.Chandler,doyouhaveamoment?IwantWtalka
随机试题
AccordingtothemostrecentAmericanFreshmansurvey,conductedannuallyby
TicktheTHREEotheritemswhicharementionedinthenewsheadlines.[img]2014m
根据刑法规定,减轻处罚是( )。A.判处法定刑中比较轻的刑罚 B.判处法定刑
建筑施工企业安全生产管理人员安全生产考核合格证书有效期为()年。<p>A1<p>
以下哪一项不会损害内部审计师的客观性?A.准备银行对账单。 B.在程序执行之前
患者于人工流产术过程中,突感胸闷,头晕。查:血压70/50mmHg,脉搏50次/
工程咨询服务机构包括()。A:工程咨询单位 B:造价咨询单位 C:工程设计
引起呼吸性碱中毒的原因是A.肺泡通气量减少 B.呼吸中枢兴奋,肺通气量增大
四君子合剂的药物组成是A.人参、炒白术、茯苓、大枣、生姜、炙甘草 B.党参、炒
工程咨询单位领导组织的内部评审,由()做汇报。A.项目经理 B.企业技术负责
最新回复
(
0
)