首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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
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
admin
2014-11-27
48
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 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
信息明示题。根据短文最后两句可知如果Robert Winter的理论是正确的话,那么科学家就可以利用这个特点来发明可以捕昆虫的装置。故选项D正确。
转载请注明原文地址:https://kaotiyun.com/show/s0v7777K
0
大学英语四级
相关试题推荐
A、Itfailstoconsiderright-handedpeople.B、Itwoksbetterwithmenthanwithwomen.C、Itisdifferentformen’sclothingand
A、Theconcertwasreallyatime-wastingone.B、Theconcertticketscouldbebookedonline.C、Therewerenotenoughchairsforpe
WiredforDistraction:KidsandSocialMedia?A)Mostparentswhoworryabouttheirkids’onlineactivityfocusonthepeopleor
A、Theycanprepareandservemeals.B、Theyknowhowtotakecareofchildren.C、Theyhavereceivedpropertraining.D、Theyknow
A、Theapproachtonativelanguageteaching.B、Thewayofclassmanagement.C、TheapproachtoEnglishteaching.D、Thewayofclas
Humansaresocialanimals,andmostofustreasureourrelationshipswithfamilyandfriends.An【B1】_____lineofresearchsugges
Troubledbythepersistentlypoorgraduationratesofbasketballandfootballplayers,theNationalCollegiateAthleticAssociat
A、Becauseitmasksthetruefeelingsoftheworkers.B、Becauseitleadstomorecomplaintsfromtheworkers.C、Becauseitpreven
IspentMondaymorningataspeedawarenesscourse,whereasIhadbeendispatchedforfailingtonoticeaspeedcameraontheot
A、Ithasbecomeextinct.B、Itsnumberwillincreasecontinually.C、Itistakenofftheendangered-specieslist.D、ItisAmerica’
随机试题
在对企业进行绩效评价时,下列属于评价企业盈利能力的基本指标的有()。
以下语句说法正确的有:
求曲线y=2-x2和直线y=2x+2所围成图形的面积.
下列哪种色素与细胞萎缩有关
A.AML—M2B.ALLC.AML一M5D.CMLE.CLL非特异性酯酶阳性且被氟化钠抑制的是
6个月婴儿,吐、泻3天,大便10~15次/13,呈蛋花汤样,有腥臭味,尿量极少,皮肤弹性差,可见花纹,前囟、眼窝明显凹陷,四肢厥冷,大便镜检WBC偶见,血清钠135mmol/L。该患儿除上述治疗外,继续处理措施是
关于单位工程竣工验收的程序和组织说法,正确的有( )。
资产评估的功能包括()。
人的精神力量、情绪状态对整个机体能起到调节作用,帮助人战胜疾病和残疾,使身心得到发展,这现象说明了个体身心发展具有()。
“中”字的区号为54,位号为48,它的十六进制数国标码为(8),其对应的机内码是(9)。
最新回复
(
0
)