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
专升本
Can trees talk? Yes — but not in words. Scientists have reasons to believe that trees do communicate with each other. Not long a
Can trees talk? Yes — but not in words. Scientists have reasons to believe that trees do communicate with each other. Not long a
admin
2012-05-24
46
问题
Can trees talk? Yes — but not in words. Scientists have reasons to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a willow tree (柳树) attacked in the woods by caterpillars (444) changed the chemistry of its leaves and made them taste so terrible that the caterpillars got tired of the leaves and stopped eating them. The even more astonishing, the tree sent out a special vapor — a signal causing its neighbors to change the chemistry of their own leaves and make them less tasty.
Communication, of course, doesn’t need to be always in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar (花蜜) for honey. So why shouldn’t trees have ways of sending messages?
Caterpillars will stop eating willow tree leaves which______.
选项
A、have a chemical change and become tasteless
B、have a pleasant taste
C、are being attacked
D、are communicating
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/ZuGC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
函数f(x)在点x=x0处的导数f’(x0)可定义为()
Motherwillneed______(add)helpwhiletherearesomanyguests.
What’sthepassageabout?______.What’sthekeytoasuccessfulstudentaccordingtothepassage?______.
TheteacherrecommendedthatJack______mathorphysicsinsteadofEnglishbecausehewasquickatnumbers.
______outofthetaxi,hewasseizedbythepolice.
Mr.Blackhas______arrivedinNewYorkandwillmeetwiththeMinisterofTradeonMondaymorning.
Amajorincentive(动力)forcollegeattendanceisthebeliefthatitwillprepareyouforacareer.Chancesarethatthecareery
Iwashalfwaybacktothecottagewheremymotherlived______Susancaughtupwithme.
Foxesandfarmershavenevergotonwell.Thesesmalldog-likeanimalshavelongbeenaccusedofkillingfarmanimals.Theyare
随机试题
规定“以托拉斯或任何类似形式限制州际贸易或对外贸易者均属非法,违者处以5000美元以下罚金,或1年以下监禁,或二者兼科”的法律是________。
Whenmengetsick,theyactlikebabies,saywomen.Butmaybethefairersexshouldlearnsomethingusefulfromtheseguys—itco
痰湿内阻所致头晕的特征,是伴有
凡美法律事务办事处是某外国律师事务所驻上海办事处,2001年经批准依法成立,根据我国有关部门的规定,下列哪些属于其可以从事的业务活动?()
月度会计报表至少应当包括()。
关于相关分析与回归分析的说法,正确的有()。
Sometimesweneedtoremindourselvesthatthankfulnessisindeedavirtue.
Susan,theUSMybestfriendisFanny.Sheiscleverandinteresting.Wealwayslookaftereachother.Thefirstweekwemet,I
分析下列程序:#include<stdio.h>main(){int*p1,*p2,*p;inta=6,b=9;p1=&a;p2=&b;if(a<B){p=p1;p1=p2;p2=p;}prin
二进制数110000转换成十六进制数是
最新回复
(
0
)