首页
登录
职称英语
[originaltext] We all scream for water when thirsty. But do you know that in
[originaltext] We all scream for water when thirsty. But do you know that in
游客
2023-07-06
16
管理
问题
We all scream for water when thirsty. But do you know that 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 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 ten thousand 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 that 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 that when the insects buzz in to eat, they won’ t buzz out.
Questions 16 to 18 are based on the passage you have just heard.
16. What do plants do when they are thirsty?
17. What plants do many insects tend to attack?
18. What could scientists do if Robert’ s theory proves to be true?
选项
A、Quiet plants.
B、Well-watered plants.
C、Healthy plants.
D、Thirsty plants.
答案
D
解析
信息明示题。短文第二段指出He also knows that many insects prefer attacking dry plants rather than healthyplants.由此可知很多昆虫喜欢攻击处于干旱状态的植物。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/2813410.html
相关试题推荐
[originaltext]AlongtheriverbanksoftheAmazonandtheOrinocothereliv
[originaltext]Itishardlysurprisingthatclothingmanufacturersfollowce
[originaltext]Itishardlysurprisingthatclothingmanufacturersfollowce
[originaltext]Itishardlysurprisingthatclothingmanufacturersfollowce
[originaltext]AFrenchtouristhighlypraisedforrescuingatwo-year-oldg
[originaltext]M:So,you’reanarchitect.W:Yes.M:Doyouworkforapublico
[originaltext]M:So,you’reanarchitect.W:Yes.M:Doyouworkforapublico
[originaltext]W:Hi,Tom.Howthingsgetalongwiththepreparationfortheann
[originaltext]W:Hi,Tom.Howthingsgetalongwiththepreparationfortheann
[originaltext]M:Pleasereconsider—whathaveyougotagainstkeepingadogfo
随机试题
______muchadviceyougivehim,hedoesexactlywhathewants.A、WhateverB、Whic
Tous,theenvironmentinwhichfishdwelloftenseemscold,darkand【B1】___
在项目决策阶段,可作为工程投资确定的重要依据的工程技术文件有()。A.项目意
()属于欧洲评级体系中外部风险的方面。A.政治/法律 B.社会人口统计
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
劳动合同补偿标准中的月工资是指劳动者在劳动合同解除或终止前()个月的平均工资。A
具“银皮”特点的是()A.麝香 B.蕲蛇 C.僵蚕 D.乌梢蛇 E.金
指导临床合理用药是执业药师的职责之一,在指导患者用药时,首先应考虑的问题是()
欲进行房地产开发,需购置土地,假设土地价款支付方式是:现时点支付600万元,此后
(2017年)已知某声源最大几何尺寸为D,距声源中心r0处的声级为Lp(r0)。
最新回复
(
0
)