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
2024-02-07
6
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、Quiet plants.
B、Well-watered plants.
C、Healthy plants.
D、Thirsty plants.
答案
D
解析
信息明示题。短文第二段指出He also knows that many insects prefer attacking dry plants rather than healthyplants.由此可知很多昆虫喜欢攻击处于干旱状态的植物。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3429676.html
相关试题推荐
[originaltext]AlongtheriverbanksoftheAmazonandtheOrinocothereliv
[originaltext]AlongtheriverbanksoftheAmazonandtheOrinocothereliv
[originaltext]Itishardlysurprisingthatclothingmanufacturersfollowce
[originaltext]AFrenchtouristhighlypraisedforrescuingatwo-year-oldg
[originaltext]AFrenchtouristhighlypraisedforrescuingatwo-year-oldg
[originaltext]M:So,you’reanarchitect.W:Yes.M:Doyouworkforapublico
[originaltext]W:Hi,Tom.Howthingsgetalongwiththepreparationfortheann
[originaltext]W:Hi,Tom.Howthingsgetalongwiththepreparationfortheann
[originaltext]M:Pleasereconsider—whathaveyougotagainstkeepingadogfo
[originaltext]M:Pleasereconsider—whathaveyougotagainstkeepingadogfo
随机试题
[originaltext]M:Isthatamap?Areyougoingsailingorsomething?W:Iwish.
汽车盘旋着,穿过村庄,翻越峡谷,沿着一条因解冻而涨水的小溪行驶。Thecarwoundthroughvillageandupanarrowva
激情passion;enthusiasm
邹明,40岁,月工资8000元,参加了社会保险;妻子37岁,无工作收入;儿子13
正强化的方法有()。A.发放奖学金 B.认可成绩 C.表扬 D.改善学习
在起重工程的设计中,计算载荷主要考虑( )。A.静载系数 B.动载系
甲公司拥有一宗登记用途为工业的房地产,建成于2004年,现状用于商业,于2007
下列不符合上市公司申请发行可转换公司债券的情形是()。A:最近三年资产诚信准备计
避免经济下滑,央行宣布降低存贷款基准利率,如果存款利率下调幅度大于贷款利率下调幅
(2016年真题)下列因素中,注册会计师在评价财务报告编制基础的可接受性时,需要
最新回复
(
0
)