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’s lethal upon contact. B、It has relatively little harmful effect. C、It affects the sense of heating. D、It dries up the skin
A、It’s lethal upon contact. B、It has relatively little harmful effect. C、It affects the sense of heating. D、It dries up the skin
admin
2010-06-01
66
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’s lethal upon contact.
B、It has relatively little harmful effect.
C、It affects the sense of heating.
D、It dries up the skin.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/8oN7777K
0
大学英语四级
相关试题推荐
Adifficultorabusivebosscanpoisonthebestofjobs.Butyouarenotpowerless;beforeyouevenconsiderquitting,trytheb
Youshould____________(诉诸法律)whenfacingsuchadifficultproblem.
SomepeoplelikewatchingTVathome,andothersmaylovehiking.ButIlikebeingatabookshop.Timespentinabookshopcanb
Starbucks’SecretIngredientHowyoucanincorporatecoffeechainchairmanHowardSchultz’persuasivecommunicationskills
Forcenturiesmandreamedofachievingverticalflight.In400A.D.Chinesechildren【S1】______withafan-liketoythatspunup
A、Thecarwasnotmovingfastenough.B、Theirclothingwaswarmenough.C、Theairoutsidewasalsohot.D、Theywerenotfeeling
A、Theyarepayingforhiseducation.B、Theyinvitedhimtotheirparty.C、Theytookhimonavacationwiththem.D、Theylethim
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1.GetProfessionalHelpRingthehelplineonFreephone0
A、Thecropswereobliteratedfortheentireyear.B、Thecropsnutritionalvaluewasconsiderablylessened.C、Thesoilwasperman
Humanmigrations(迁移)withinrecordedhistoryhavetransformedtheentirecharacteroflandsandcontinentsandthecomposition
随机试题
量子计算技术快速发展对现有的密码技术构成极大的威胁和挑战,一旦实用化量子计算出现,将导致基于离散对数、整数分解的公钥密码体制直接被快速________,意味着当前所使用的网络信息系统不再安全。为应对此类________威胁,美国和欧洲已经启动了抗量子计算攻
独立自主和平外交政策的基本原则,是我国对外交往活动的根本准则。()
患者胃肠热盛,大便秘结,腹满硬痛而拒按,潮热,神昏谵语,但又兼见面色苍白,四肢厥冷,精神萎顿。其病机是
承包人向发包人的索赔包括()。
热力管道保温施工时,同层的预制管壳应(),内、外层应(),外层的水平接缝应在()。
能够简化登记总分类账工作的账务处理程序有( )。
关于教师资格认定的说法,以下表述正确的是()。
领导能力的评价依据是( )。
Thefitnessmovementthatbeganinthelate1960sandearly1970scenteredaroundaerobicexercise(有氧操).Millionsofindividual
Themostconsistentlyidentifiedteachereffectivenessvariableistimeontask.Thatis,themoretimethatstudentsspendon
最新回复
(
0
)