首页
登录
职称英语
What do plants do when they are thirsty? [br] [originaltext] We all scream
What do plants do when they are thirsty? [br] [originaltext] We all scream
游客
2024-10-23
22
管理
问题
What do plants do when they are thirsty? [br]
We all scream for water when thirsty. But do you know in very hot, dry weather plants also make faint sounds — as if they’re crying out for help?
You see, in a plant’s stem there’re 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 quieter 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 his 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 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 could drive the insects away.
B、They could keep the plants well-watered.
C、They could make the plants grow faster.
D、They could build devices to trap insects.
答案
D
解析
A 和D 都与昆虫有关,而B 和C 都与植物有关,故听音时应注意捕捉相关信息。再由原文中提到的If he is right... They could build traps that imitate crying plants可知答案为D 。
转载请注明原文地址:https://tihaiku.com/zcyy/3814537.html
相关试题推荐
WhatdidtheprotestorsdotosupportAlfredoReinado?[br][originaltext]
WhatdidtheprotestorsdotosupportAlfredoReinado?[br][originaltext]
WhatdidtheprotestorsdotosupportAlfredoReinado?[originaltext]Hundre
Whatdoesthespeakersayabouttheocean’slevelofsaltiness?[originaltext]
Whatisthemaintopicofthisconversation?[br][originaltext]M:Weseemtob
Japan’sdemandforimportslastmonth[br][originaltext]Japan’stradesur
Untilwhattimewillthetornadowatchbeineffect?[br][originaltext]We
Untilwhattimewillthetornadowatchbeineffect?[br][originaltext]We
Whatcanweinferfromthisnewsitem?[br][originaltext]TheNewYorkPhi
Whatcanweinferfromthisnewsitem?[originaltext]TheNewYorkPhilharmo
随机试题
ThanksinnosmallparttoAlGoreandhisfilmproducers,theAmericanpub
Whatisthesinglelargestproblemfacingthehealthcaresystemtoday?[br][or
PartⅡReadingComprehension(SkimmingandScanning)Directions:Inthispart,y
Americansareproudoftheirvarietyandindividuality,yettheyloveandre
新凯恩斯主义对新古典学派的观点主要有哪些吸收和肯定
(2017年真题)根据《关于规范商业银行代理销售业务的通知》,下列关于销售管理的
咯痰白滑,量多易出者,属()A.燥痰 B.寒痰 C.热痰 D.湿痰
规范的股权结构的含义是()。A:股权集中度有所降低B:流通股股权适当集中C:
对于不起诉决定,如果被害人不服检察院的不起诉决定,依法可以采取下列哪些诉讼行为?
(2017年真题)下列各项中,关于企业无法查明原因的现金溢余,经批准后会计处理表
最新回复
(
0
)