首页
登录
职称英语
What do plants do when they are thirsty? [br] [originaltext] We all scream
What do plants do when they are thirsty? [br] [originaltext] We all scream
游客
2023-11-19
28
管理
问题
What do plants do when they are thirsty? [br]
We all scream for water when thirsty. But do you know 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’re 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 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 the plant sounds thirsty. Then he watches 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 when the insects buzz in to eat, they won’t buzz out.
选项
A、They could drive the insects away.
B、They could keep the plants well-watered.
C、They could make the plants grow faster.
D、They could build devices to trap insects.
答案
D
解析
A 和D 都与昆虫有关,而B 和C 都与植物有关,故听音时应注意捕捉相关信息。再由原文中提到的If he is right... They could build traps that imitate crying plants可知答案为D 。
转载请注明原文地址:https://tihaiku.com/zcyy/3199975.html
相关试题推荐
Howoldisthehousekeepernow?[br][originaltext]M:Youhavelivedhereacons
Howoldisthehousekeepernow?[originaltext]M:Youhavelivedhereaconsiderab
WhathashappenedtoSam?[br][originaltext]M:Ifeelawful,Alice!W:Youdo
TheRussianMilitarysaysitwill______.[br][originaltext]TheRussianM
TheRussianMilitarysaysitwill______.[br][originaltext]TheRussianM
Thenewsitemreporteda(n)______.[br][originaltext]InthePhilippines.
Thenewsitemreporteda(n)______.[br][originaltext]InthePhilippines.
Whichofthefollowingisthebesttitleofthepassage?[br][originaltext]
Whatdothespeakersmainlydiscuss?[br][originaltext]M:Hello,Mrs.Kelly.I
Whatdothespeakersmainlydiscuss?[br][originaltext]M:Hello,Mrs.Kelly.I
随机试题
Tohissurprise,theelectriccurrentflowsthroughaconductor____________(就好像
KeepOptimisticandStayAwayfromDepression[A]Cynic,AmbroseBierce
AsanyonewhohasbeentoJapanknows,therearestrictrulesaboutbathing
家庭债务管理力主"量力而行",其()就是对未来的还贷能力以及借货活动对家庭财
沪股通通过( )设立的证券交易服务公司进行交易。A.上海证券交易所和香港联合交
为推动中药产业现代化,加快传统中药走向世界,国务院药品监督管理部门制定发布()
A.直接晒干 B.需放入胆巴水中夜泡日晒,反复多次直至表面出现大量结晶盐粒
下列对船舶保险共同海损赔款的陈述错误的是( )。A.按照保险条款规定承保的共同
在控制工作中,应对控制费用和控制收益进行比较,这是控制工作的( )要求。A.整
下列不应计入材料费的是()。A.工程设备费出厂价格 B.工程设备运杂费
最新回复
(
0
)