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
11
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、They extend their water pipes.
B、They give out faint cries.
C、They make noises to drive away insects.
D、They become elastic like rubber bands.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3538626.html
相关试题推荐
[originaltext]M:[23]Somedecadesagomymotherwasreplacedbyacomputer.Her
[originaltext][19]Iamhonoredtobewithyoutodayatyourcommencementf
[originaltext][19]Iamhonoredtobewithyoutodayatyourcommencementf
[originaltext][16]LeonardBernsteinsaidthattoachievegreatthings,you
[originaltext]Theworld’ssmartestadolescentsinmathematicsandsciencea
[originaltext]Theworld’ssmartestadolescentsinmathematicsandsciencea
[originaltext]Weallscreamforwaterwhenthirsty.[9]Butdoyouknowinv
[originaltext]Weallscreamforwaterwhenthirsty.[9]Butdoyouknowinv
[originaltext]W:Goodevening!Welcometoourprogram.OurguesttodayisMr.T
[originaltext]W:Goodevening!Welcometoourprogram.OurguesttodayisMr.T
随机试题
ModernfeminismhasbroughtthereputationoftheEnglishwriterMaryWollst
[originaltext]SomestudentsattheOpenUniversityleftschool20yearsago
高层建筑内瓶装液化石油气储气间,应设哪种火灾探测器?()A.感烟探测器 B
对于主动脉瓣狭窄,超声表现不正确的是A.心尖五腔心切面显示五彩镶嵌的高速射流束从
下列哪种为我国规定报告的甲类传染病:A.麻疹 B.鼠疫 C.流感 D.麻风
三十岁男性患者,因左下后牙牙龈反复肿胀流脓半年求治。检查发现和牙釉质发育不全,龋
C观察前面图形可发现,第一图顺时针旋转90度得到第二图;第二图顺时针旋转180度得到笫三图;第三图顺时针旋转270度得到第四图,故第四图应顺时针旋转360度
()是组织对各类岗位的工作任务、员工的任职资格等事项所作的统一规定。A.岗位分
参数估计在统计推断中如何实现?
以动产抵押的,抵押权自登记时设立。( )
最新回复
(
0
)