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
11
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 crops were obliterated for the entire year.
B、The crop’s nutritional was considerably lessened.
C、The soil was permanently damaged.
D、The loss was not as bad as had been anticipated.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3004798.html
相关试题推荐
[originaltext]It’scommonknowledgethatmusiccanhaveapowerfuleffect
[originaltext]It’scommonknowledgethatmusiccanhaveapowerfuleffect
[originaltext]It’scommonknowledgethatmusiccanhaveapowerfuleffect
[originaltext]Thefiddlercrabisalivingclock.Itindicatesthetimeof
[originaltext]Thefiddlercrabisalivingclock.Itindicatesthetimeof
[originaltext]Thefiddlercrabisalivingclock.Itindicatesthetimeof
[originaltext]Aroundtheworldmoreandmorepeoplearetakingpartindang
[originaltext]W:Ican’tbeartheairpollutioninthiscityanymore.It’sgett
[originaltext]W:Ican’tbeartheairpollutioninthiscityanymore.It’sgett
[originaltext]W:Ican’tbeartheairpollutioninthiscityanymore.It’sgett
随机试题
Youshouldspendabout20minutesonQuestions27-40whicharebasedonReading
Theexplosivegrowthincasinosisoneofthemost______signsofWesternization.
导体的布置形式常采用()A.三相水平布置 B.三相垂直布置 C
所示结构,B点的反力是( )。 A.RB=P B.RE=0.5P C.R
广泛用于食品包装的材料是( )。A.聚碳酸酯塑料 B.聚丙烯 C.
材料一《普通高中物理课程标准(2017年版)》中关于“库仑定律”的内容标准为:“
共用题干 我国某贸易公司A与美国公司B签署出口某大型机械设备的合同,其中大型设
如果被测量变化很大,而测量仪器的示值改变很小,则说明该测量仪器()。[2011
下列关于外汇远期交易应用情形的描述中,正确的有( )。A.外汇债务承担者通过外
腹泻的发生机制:腹泻的发病机制相当复杂,从病理生理角度可归纳为分泌性腹泻、消化功
最新回复
(
0
)