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、They give out faint cries. B、They make noises to drive away insects. C、They extend their water pipes. D、They become elastic li
A、They give out faint cries. B、They make noises to drive away insects. C、They extend their water pipes. D、They become elastic li
admin
2010-03-26
15
问题
We all scream for water when thirsty. But do you know But do you know in very hot dry weather, plants also make faint sounds as if they cry out for help?
You see, in a plant’s stem, there are hundreds of water pipes that bring water and minerals from the soil all the way up to the leaves. As the ground turns dry, it becomes herder and harder for the plants to do this.
In severe droughts, plants have to fight to pull out any water available. Scientist Robert Winter has found out that when it is really bad, their water pipes snap from the tension like rubber bands. When that happens, the whole plant vibrates a little. The snapping pipes make noises ten thousand times more quiet than a whisper.
Robert knows that healthy well-water plants are quiet. He also knows that many insects prefer attacking dry plants rather than healthy plants. How do the insects know which ere healthy plants and which ere not? Robert thinks that the insects may listen for the plants that cry and then they may buzz in to kill.
To test his theory, Robert is using a device that can imitate plant cries. He attacks it to a quiet healthy plant so that the plant sounds thirsty. Then he watches insects to see if they attack more often than usual,
If he is right, scientists could use the insects’ ability against them. They could build traps that imitate crying plants. So when the insects buzz in to eat, they won’t buzz out.
选项
A、They give out faint cries.
B、They make noises to drive away insects.
C、They extend their water pipes.
D、They become elastic like rubber bands.
答案
A
解析
细节明示题。文中第一段第二句“But do you know in very hot dry weather, plants also make faint sounds as if they cry out for help?”清楚的表明;在非常干热的天气里,植物也会发出微弱的声音。所以正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/81OK777K
0
大学英语六级
相关试题推荐
WhatcanpeopleknowfromthecrownofanancienttreefoundinNewYork?Whatpossiblyresultedintheevolutionfromleafless
Whatisthemainsubjectofthispassage?Howdoyouthinktheauthorfeelsabouttheselong-livedpeople?
Nowadays,scientistsstillhavenotmadehugeprogressontheresearchofearthquakebecausetheyhavenotfullyunderstoodwhat
Nowadays,scientistsstillhavenotmadehugeprogressontheresearchofearthquakebecausetheyhavenotfullyunderstoodwhat
A、Callonpeopletoprotectsharks.B、Pointoutthelivingenvironmentofsharks.C、Explainwhythesharksaredangerous.D、Ani
Personalityistoalargeextentinherent—AtypeparentsusuallybringaboutAtype(36)______.Buttheenvironmentmustalsoha
Personalityistoalargeextentinherent—AtypeparentsusuallybringaboutAtype(36)______.Buttheenvironmentmustalsoha
A、Differencesbetweenpeopleswillgraduallydisappear.B、Thetourismindustrywillbecomeflourishing.C、Theworldwillbecome
Man,eveninthelowerstagesofdevelopment,possessesafacultywhich,forwantofabettername,Ishallcallnumbersense.T
Naturalresourcesprovidealivingandshelterforhundredsofmillionsofpeopleinthedevelopingworld.Asthoselifesupport
随机试题
A、ThelawofweaponpurchasinginIllinoisState.B、Therelationshipbetweencrimeandmentalillness.C、Thegraduatestudentof
简述强心苷的正性肌力作用机制。
在普通铣床上铣削模具型面具有哪些难点?
消化性溃疡死亡的主要原因十二指肠球部后壁溃疡常见关于溃疡病的表现
国土资源部发布的《关于完善征地补偿安置制度的指导意见》提出了被征地农民的安置途径,其中不包括()。
土地增值税实行超额累进税率,增值额超过扣除金额100%、未超过200%的部分,税率为()。
商业银行在对集团客户授信时,应当在授信协议中约定,要求集团客户及时报告被授信人净资产()以七关联交易的情况。
社会工作者在小组工作中期转折阶段的主要工作包括()
心智技能形成的最初阶段是()
themainentrance
最新回复
(
0
)