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
2023-06-30
74
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 healthy plants.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:http://tihaiku.com/zcyy/2794852.html
相关试题推荐
[originaltext]WhenIfirstwenttoLondonasastudent,Isataloneduring
[originaltext]Tokyoisoneofthoseplacesthatyoucanloveandhateatth
[originaltext]Tokyoisoneofthoseplacesthatyoucanloveandhateatth
[originaltext]Tokyoisoneofthoseplacesthatyoucanloveandhateatth
[originaltext]Howmanyofyoudrinkcola?Nearlyeveryone.Didyouknowtha
[originaltext]Howmanyofyoudrinkcola?Nearlyeveryone.Didyouknowtha
[originaltext]W:Welcometoourcity,Mr.Lorden.But,ofcourse,youhavebeen
[originaltext]W:Welcometoourcity,Mr.Lorden.But,ofcourse,youhavebeen
[originaltext]M:Today,asourguestonStudentRadioWestmarkisstudentorgan
[originaltext]M:Today,asourguestonStudentRadioWestmarkisstudentorgan
随机试题
DearSirs,Twoweeksago,Isentyouanorderfor45copiesofthe"Contemporar
Aftertheyear1958,amoremodernSupremeCourtagreedwithJusticeHelen.
Thisbookconcentratesratheronproductsoringredients,whichareaddedto
Underwhatagecan’tchildrenshootadvertisement?[br][originaltext]16.Chil
[originaltext]YaleUniversityannouncedonMondaythatitwasplanningtocreat
Everyprofessionortrade,everyart,andeverysciencehasitstechnicalvo
皮类药材粉末中一般不应含有的特征是A.石细胞 B.导管 C.淀粉粒 D.筛
动态资产配置的核心在于对资产类别预期收益的动态监控与调整。()
求助者中心疗法对人性的基本看法包括()。 (A)人具有生物的本能(B)人有
6岁女孩主诉新牙歪斜。查:右上中切牙萌出2/3,向远中倾斜,中间2mm间隙。下列
最新回复
(
0
)