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
2024-05-14
29
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 am 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 more quiet than a whisper.
Robert knows that healthy well-watered plants are quiet. He also knows that many insects prefer a 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 m 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 ff they attack more often than usual. If he is fight, 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.
选项
A、They give out faint cries.
B、They make noises to drive away insects.
C、They extend their water pipes.
D、They become elastic like rubber bands.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3597828.html
相关试题推荐
[originaltext]Whatarethezebrastripesonthetomatosoupcansandpotato
[originaltext]Whatarethezebrastripesonthetomatosoupcansandpotato
[originaltext]Theclassiccaseinmedicalhistoryofatyphoidcarrierist
[originaltext]M:Mathdepartment,ProfessorWebsterspeaking.W:Hello,Prof.W
[originaltext]M:Mathdepartment,ProfessorWebsterspeaking.W:Hello,Prof.W
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]HowdoAmericanhusbandsfeelabouthavingworkingwives?Ma
随机试题
Therearefewplacesinthiscountry______wheatcan’tgrowwell.A、whereB、whic
女,50岁,左肩疼痛1月余,向左上肢放射,伴左肩关节活动受限,症状逐渐加重,夜间
治疗痰火凝结之瘿瘤、瘰疬,应选用的最佳药物是()A.栀子 B.知母
阴户一词最早见于A.《妇科秘诀大全》 B.《诸病源候论》 C.《备急千金要方
可见分光光度法常用的波长范围为A:100~200nm B:200~400nm
三结合教育合力的基本形式是()。 A.互相访问B.通讯联系C.家长
A.急性肠梗阻 B.挤压综合征 C.肺炎高热 D.慢性十二指肠瘘 E.感
下列不属于农业四项补贴内容的是()。A.良种补贴 B.农机具购置补贴 C.农
B石化分公司双苯厂硝基苯精馏塔发生爆炸,造成8人死亡,60人受伤,直接经济损失6
信号系统联调主要是对各子系统间的通信接口和()进行调试。A.设备功能 B.信
最新回复
(
0
)