首页
登录
职称英语
[originaltext] We all scream for water when thirsty. But do you know in very
[originaltext] We all scream for water when thirsty. But do you know in very
游客
2024-03-09
71
管理
问题
We all scream for water when thirsty. But do you know in very hot. dry weather, plants also make faint sounds- as if they are crying 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 harder 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 10,000 times more quiet than a whisper. Robert knows that healthy, well-watered plants are quiet. He also knows that many insects prefer attacking dry plants rather than healthy plants. How do the insects know which are healthy plants and which are not? Robert thinks that the insects may listen for the plants that cry. And then they may buzz in to kill. To test this theory, Robert is using a device that can imitate plant cries. He attaches it to a quiet, healthy plant so the plant sounds thirsty. Then he watches the 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.
9. What do plants do when they are thirsty?
10. What plants do many insects tend to attack?
11. What could scientists do if Robert’s theory proves to be true?
选项
A、They extend their water pipes.
B、They give out faint cries.
C、They make noises to drive away insects.
D、They become elastic like rubber bands.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3517997.html
相关试题推荐
[originaltext]Weallscreamforwaterwhenthirsty.Butdoyouknowinvery
[originaltext]W:Goodevening!Welcometoourprogram.OurguesttodayisMr.T
[originaltext]TodaywearetalkingabouteBay,oneoftheenormouslysucces
[originaltext]Thedangerfromearthquakesisveryreal—theyareprobablyth
[originaltext]W:Ithinkifyouwanttogetsomeexcitementinyourlifeyouou
[originaltext]W:EricSchurenbergisthemanagingeditorofMoneyMagazineint
[originaltext]AgrowingnumberofAmericanuniversitiesaredroppingtheen
[originaltext]Lasttimeweweretalkingabouttheneedforadvertising.Now
[originaltext]TheInternethascreatedawholenewworldofsocialcommunic
[originaltext]M:Whatdidyousayyouweregoingtotakeupasacareer?W:Law
随机试题
Manyinstructorsbelievethataninformal,relaxedclassroomenvironmentis【
[originaltext]I’dliketowelcomeyoualltoourActiveOutdoorClub.I’ll
It’sTimetoPayAttentiontoSleep,theNewHealthFrontier[A]
Ifyouwantto______(取得成就或实现雄心壮志),youmustworkhard,makeeffortsandgetprep
ManyEuropeancountrieshavebeenmakingtheshifttoelectricvehiclesandG
[originaltext]Therearebetween3000and6000publiclanguagesintheworld
现代医学的主要诊断方法包括()A.问诊和采集病史 B.体格检查 C.实验室检
A.到达集尘极的尘埃带正电 B.带电尘埃在运动中所受电场力不变 C.电场方向
主张“世界上除了运动着的物质之外,什么也没有”的观点是:A.否认人的意识存在的自
(2015年真题)期货公司及其从业人员通过报刊、电视、电台和网络等公共媒体开展期
最新回复
(
0
)