首页
登录
职称英语
[originaltext] Trees have a spectacular survival record. Over a period of mo
[originaltext] Trees have a spectacular survival record. Over a period of mo
游客
2023-08-30
42
管理
问题
Trees have a spectacular survival record. Over a period of more than 400 million years, they have evolved as the tallest, most massive and longest-lived organisms ever to inhabit the Earth. Yet trees lack a means of defense that almost every animal has: threes cannot move away from destructive forces. Because they cannot move, all types of living and nonliving enemies—fire, storm, micro-organisms, insects, other animals and later, humans—have wounded them throughout their history. Trees have survived because their evolution has made them into a highly compartmented organism; that is, they wall off injured and infected wood.
In that respect trees are radically different from animals. Fundamentally, animals heal: they preserve their life by making billions of repairs, installing new cells in the positions of old one. Trees cannot heal: they make no repairs, instead, they defend themselves from the consequences of injury and infection by walling off the damage. At the same time they put new cells in new positions; in effect they grow a new tree over the old one every year. The most obvious results of the process are growth rings, which are visible on the cross section of a trunk, a root, or a branch.
选项
A、By moving away.
B、By calling for help.
C、By climbing.
D、By remaining with its group.
答案
A
解析
选项都和方式有关。本题是细节题。从Yet trees lack a means of defense that almost every animal has: trees cannot move away from destructive forces.树木缺乏所有动物具备的防御方式——逃跑。
转载请注明原文地址:https://tihaiku.com/zcyy/2970615.html
相关试题推荐
[originaltext]Asthetwentiethcenturybegan,theimportanceofformaledu
[originaltext]Asthetwentiethcenturybegan,theimportanceofformaledu
[originaltext]PeoplefellinlovewithElizabethTaylorin1944,whenshes
[originaltext]PeoplefellinlovewithElizabethTaylorin1944,whenshes
[originaltext]W:Hello,Michael.Wouldyoucometomyofficeforaminute?Iwa
[originaltext]F:SusanBauerspeaking.M:Dr.Bauer,mynameisTomWhite.Myr
[originaltext]F:SusanBauerspeaking.M:Dr.Bauer,mynameisTomWhite.Myr
[originaltext]F:SusanBauerspeaking.M:Dr.Bauer,mynameisTomWhite.Myr
[originaltext]W:Howdoyoulikeyournewtenantwhomovedtoyourapartmentla
[originaltext]W:Howdoyoulikeyournewtenantwhomovedtoyourapartmentla
随机试题
Therearethreemaingroupsofoils:animal,vegetableandmineral.Greatnu
[originaltext]M:IamsorelievedIjustfinishedthestoryIwasworkingonfo
AbbySubarkisamotheroftwokidsfromBoston."Formykids,I’mnervous.
艺术家在作品中表现出来的相对稳定的独创性与艺术特色是() A.艺术风格
某机关接待科一日迎来三位访客:老赵、老钱和老孙。会谈后,该科三位同志发现,本科的
如果你是公司主管,你下属中有这样一位员工——他自主性、独立性很强,不愿受人管束,
患者,女,34岁。因1个月来发热、乏力、咳嗽,1天来左眼突然失明来院。既往有心脏
N市为推动“中国制造2025”试点示范城市在本地落地实施,组成调研组对本市制造业
在建设工程竣工结算审查时,实行总承包的工程,由( )编制单位工程竣工结算,在总包
施工方视项目特点和施工进度控制的需要,编制()。A.施工进度计划 B.项目动
最新回复
(
0
)