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
2024-04-03
78
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:http://tihaiku.com/zcyy/3538627.html
相关试题推荐
[originaltext]Hello,I’mCallumRobertsonandyou’relisteningtothemusic
[originaltext]Hello,I’mCallumRobertsonandyou’relisteningtothemusic
[originaltext]Pianosarenormallyfoundinbuildingforobviousreasons.Ho
[originaltext]EversinceMcDonald’sadoptedastrategyin2003thatfocuses
[originaltext]Asweallknow,banksdochargefeesof$2or$3atatimeto
[originaltext]Asweallknow,banksdochargefeesof$2or$3atatimeto
[originaltext]TheHarvardStudyofAdultDevelopmentmaybethelongeststu
[originaltext]TheHarvardStudyofAdultDevelopmentmaybethelongeststu
[originaltext]TheHarvardStudyofAdultDevelopmentmaybethelongeststu
[originaltext]Manypeopledislikewalkingintothebank,standinginlongl
随机试题
(1)Supposeyouaredrivingonahighwaywiththreelanesgoinginyourdirect
Theideathatsciencecan,andshould,berunaccordingtofixedandunivers
Astemptingasitcanbetoletitallhanglooseandstopworryingwhileon
Thewarriorwouldjust_______die_______surrender.A、rather;astoB、prefer,t
以丛书的名义在同一年内连续出版名称相同、周期相同、只以某种序列号互相区分的出版物
多普勒心排血量测定的常用部位包括()A.食管 B.锁骨上窝 C.胸骨上窝
顺序数据的功能比分类数据要弱一些。()
A.急性肾衰竭 B.输尿管乙状结肠吻合术后 C.急性肝功能衰竭 D.急性出
下列不属于肺炎症状的是A.发热 B.呼吸急促 C.持久干咳 D.胸闷 E
0,3,2,5,4,7()A.6 B.7 C.8 D.9
最新回复
(
0
)