首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It served as a fertilizer for crops. B、it formed a new mountain. C、It stabilized air temperatures. D、It destroyed various inse
A、It served as a fertilizer for crops. B、it formed a new mountain. C、It stabilized air temperatures. D、It destroyed various inse
admin
2010-06-01
35
问题
M: The volcanic ash from the eruption of Mount Saint Helens certainly caused a lot of damage, didn’t it?
W: It did, but not as much as experts have predicted. It seems to have had a beneficial effect as well.
M: Really? But were crop losses great?
W: Yes. However, since the weather following the eruption was unexpectedly good, some crop yields remain steady or even increase beyond normal expectancy level.
M. I’m glad to hear that. But what was the beneficial effect you mentioned?
W: A mass destruction of various insect population.
M: How could the ash kill insects without effecting people too?
W: 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 lethal.
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://kaotiyun.com/show/yoN7777K
0
大学英语四级
相关试题推荐
RodneyMace,35,ismarriedwithtwoyoungchildren,andisapart-timeteacherofarchitecturalhistory."Iamconstantlysurpr
A、Shemadegoodtips.B、Shewasfinedbecauseshedrovedesperately.C、Shehitapoleandwasfiredagain.D、Herpassengerwasb
A、Heisalreadyattheuniversity.B、Heshouldturnatthegate.C、Heshouldcontinuealongtheroad.D、Hemustpayveryclosea
A、Husbandandwife.B、Fatheranddaughter.C、Doctorandpatient.D、Teacherandstudent.C
Inthelatenineteenthandearlytwentiethcenturies,oneofthemostclearlyvisibledifficulties【C1】______teachersinNewYo
A、Somemoney.B、Theirshoes.C、Theirplaythings.D、Theirrelatives’hands.C
EmploymentinJapanRecruitingseason:who,whenandwhereEveryautumn,whenrecruitmentofnewgraduatesandschool
Highschoolstudentswho,aftergraduation,wouldliketocontinuetheireducationarefrequentlyfacedwithmanyproblemsinfi
A、Theyneedcareandaffection.B、Theyarefondofround-the-worldtrips.C、Theyaremostlyfrombrokenfamilies.D、Theyarelik
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1.GetProfessionalHelpRingthehelplineonFreephone0
随机试题
男性,47岁,腹胀、纳差半年,6小时前突然呕血约1000ml来急诊,既往HBsAg(+)。查体:示P125次/分,BP70/50mmHg,巩膜轻度黄染,肝、脾肋下未触及,移动性浊音(+),下肢有可凹性水肿。导致呕血的最可能病因是
速发型多器官功能衰竭是指更多系统功能障碍发生在原发急症发病后()
在某市开发区拟建设一座110/10kV变电所,两台主变压器布置在室外,型号为SFZl0—20000/110,设两回110kV电源架空进线。高压配电装置为屋内双层布置:10kV配电室、电容室、维修间、备件库等均匀布置在一层;110kV配电室、控制室布置在二层
下列关于分解爆炸所需能量与压力关系的说法中,正确的是()。
下列做法,违反《会计法》规定的有( )。
2019年4月,审计组对某公司2018年度财务收支进行了审计。在对该公司固定资产业务进行审计时,发现如下情况:1.该公司与设备采购有关的部分内部控制如下:(1)采购部门确定设备需要量,提出设备购置申请书,报送设备管理部门。(2)设备管理部门根据申请书
当月准予抵扣的进项税额为( )万元。当月应纳营业税额为( )万元。
在采用资本资产定价模型估计普通股成本时,对于贝塔值的估计,下列表述正确的有()。
“二龙戏珠”是QSZ92式9mm手枪实弹射击过程中经常发生的故障,这种故障是指手枪射击过程中两发子弹同时卡在弹膛口附近位置,导致枪支不能发射的现象。下图是排除此类故障的分解动作,动作顺序正确的是()。
下列选项中体现辩证否定观的是()。
最新回复
(
0
)