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
30
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、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
信息明示题。短文开头指出in very hot,dry weather,plants also make faint sounds即在非常炎热干旱的天气里,植物会发出微弱的声音。所以选A。
转载请注明原文地址:https://tihaiku.com/zcyy/2794851.html
相关试题推荐
[originaltext]AlbertSchweitzerwasbornin1875inAlsace.Atthattime,i
[originaltext]Oneofthecomplaintsofcityresidents,notsurprisingly,is
[originaltext]Oneofthecomplaintsofcityresidents,notsurprisingly,is
[originaltext]YellowPagesadvertisingisdirectoryadvertisingbecauseit
[originaltext]Britishpolicesayasecondmanhasbeenarrestedinconnecti
[originaltext]Britishpolicesayasecondmanhasbeenarrestedinconnecti
[originaltext]Britishpolicesayasecondmanhasbeenarrestedinconnecti
[originaltext]Britishpolicesayasecondmanhasbeenarrestedinconnecti
[originaltext]Indiansaretheworld’sbiggestbookworms,readingonaverage
[originaltext]Afoxonedayfellintoadeepwellandcouldfindnomeanso
随机试题
[audioFiles]audio_eusm_0106(20106)[/audioFiles]A、Thestudentsshouldreturnto
试样在1000℃灼烧后所失去的重量就是灼烧减量。灼烧减量主要包括( )。A.二
有一投资项目,原始投资为300万元,全部投资均于投资起点一次投入,投资期为零,营
“昔日同窗情,至今常怀念”,这属于( )。A.运动记忆 B.情绪记忆 C.
刘先生3月1日买入A股票1000股,共支付8000元,5月13日改股票公积金转增
百合除治疗肺热咳嗽、劳嗽咯血外,还能够治疗的病证是()A.肝肾阴虚、头晕目
能引起恒温动物体温异常升高,由磷脂、脂多糖和蛋白质组成的高分子复合物称为A.粉针
教育法律法规是以( )保证实施的行为准则。A.社会规范 B.国家强制力
社会工作者在服务结束后,跟进服务的实施方法有()。A.电话跟进 B.个别会
破伤风病人典型的症状是肌紧张性收缩的基础上,发生阵发性肌肉强烈痉挛,通常最先受影
最新回复
(
0
)