首页
登录
职称英语
[originaltext] We all scream for water when thirsty. [9]But do you know in v
[originaltext] We all scream for water when thirsty. [9]But do you know in v
游客
2023-08-13
39
管理
问题
We all scream for water when thirsty. [9]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. [10]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. [11]They could build traps that imitate crying plants, so when the insects buzz in to eat, they won’t buzz out.
Questions 9 to 11 are based on the passage you have just heard.
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、Thirsty plants.
B、Well-watered plants.
C、Quiet plants.
D、Healthy plants.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2922367.html
相关试题推荐
[originaltext]AnancientGreekphilosopheroncewrotethatlaughteriswhat
[originaltext]AnancientGreekphilosopheroncewrotethatlaughteriswhat
[originaltext]AnancientGreekphilosopheroncewrotethatlaughteriswhat
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
[originaltext]Thewindsofatornadoarethemostviolentanddestructiveo
[originaltext]W:[5]AndnowhereisourguestHarrisonBlacktotellusaboutL
[originaltext]W:[5]AndnowhereisourguestHarrisonBlacktotellusaboutL
[originaltext]W:Goodafternoon.ThisisJanespeaking.HowcanIhelpyou?M:
随机试题
Theyearwhichprecededmyfather’sdeathmadegreatchangeinmylife.Ihad
InternationalSummerExchangeProgram1.AimsoftheprogramTocreatearew
【B1】[br]【B6】[audioFiles]audio_eusm_j01_343(20099)[/audioFiles]developed此处应该填入
A.whereB.exceptionsC.affairsD.meetE.cr
[originaltext]W:Whatagreatday,don’tyouthink?M:Iguessso.Ihadn’tnot
[originaltext]W:Whatarethesethingsinoursuitcase?Therearen’tanytoysa
Ⅲ度烧伤的特点为A.伤及表面,局部红肿,无水疱B.3~5天愈合,不留瘢痕C.水疱
男性,55岁。1年来发作性心前区疼痛,每于劳累或生气时发作,向咽部放射,持续数分
以下哪项与避免草酸钙结石再发无关A.养成多饮水的习惯 B.积极治疗尿路感染
在直接标价法下,如果一定单位的外币折算的本国货币增多,说明本币币值()。A.上
最新回复
(
0
)