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
Lichens, probably the hardiest of all plants, live where virtually nothing else can—not just on rugged mountain peaks but also o
Lichens, probably the hardiest of all plants, live where virtually nothing else can—not just on rugged mountain peaks but also o
admin
2018-06-06
85
问题
Lichens, probably the hardiest of all plants, live where virtually nothing else can—not just on rugged mountain peaks but also on sunbaked desert rocks. They are usually the first life to appear on a mountainside that has been scraped bare by an avalanche.
Unlike other members of the plant kingdom, lichens are actually a partnership between two plants. The framework of a lichen is usually a network of minute hairlike fungus that anchors the plant. The other component is an alga, similar to the green film of plant life that grows on stagnant pools, that is distributed throughout the fungus. Being green plants, algae are capable of photosynthesis—that is, using energy from the Sun to manufacture their own food. The fungi are believed to supply water, minerals, and physical support to the partnership.
Lichens are famous for their ability to survive water shortage. When water is scarce(as is often the case on a mountain), lichens may become dormant and remain in that condition for prolonged periods of time. Some lichens can even grow where there is no rain at all, surviving on only occasional dew—the moisture that condenses on the surface of the plants at night, And unlike most other plants, lichens are little affected by the strong ultraviolet rays in the mountains.
Lichens use little energy, for they grow slowly. Some grow so slowly and are so old that they are called "time stains." You may find lichens that are centuries old: certain of these lichen colonies have been established for an estimated 2,000 years.
For decades, scientists wondered how the offspring of an alga and a fungus got together to form a new lichen, it seemed unlikely that they would just happen to encounter one another. It was finally discovered that in many cases the two partners have never been separated. Stalklike "buds" that form on certain lichens are broken off by the wind or by animals: these toll or are blown to a new location.
All of the following statements are mentioned in the discussion of lichens EXCEPT:______.
选项
A、They are capable of producing their own food.
B、They require large amounts of minerals to prosper.
C、They are a union of two separate plants.
D、They can live thousands of years.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/GLSO777K
本试题收录于:
NAETI中级口译笔试题库外语翻译证书(NAETI)分类
0
NAETI中级口译笔试
外语翻译证书(NAETI)
相关试题推荐
Howmuchphysicalactivityshouldteenagersdo,andhowcantheygetenough?Manyteenagersspendalot
Howmuchphysicalactivityshouldteenagersdo,andhowcantheygetenough?Manyteenagersspendalot
Sinceshedidnothavetimetoreadtheentireplaybeforeclass,shereadanoutlineoftheplotinstead.
Inthepopularmind,theInternetistherealizationoftheglobalvillage,wheretheflowofinformationandideasisunimpeded
Marymusthavereceivedmymail;otherwiseshewouldhaverepliedbeforenow.
ThegovernmentisgettingnothingdonebecauseBrexitoccupiesmostoftheirconsiderablecapacityforinternecinewarfare.
Next,wefocusonseveralareaswheregender-basedviolenceispervasive:inuniversities,urbansettings,duringwarandmilita
InterpretthefollowingpassagesfromEnglishintoChinese.Startinterpretingatthesignalandstopatthesignal.Youmaytak
A、Nuclearenergyisenvironmentallyfriendly.B、Nuclearenergyisindispensabletomankind.C、Fossilfuelscausepollutiontoth
Whyarewarriorscapableofworkingtogether,althoughtheylikefightingwitheachother?
随机试题
感性认识的形式是________,理性认识的形式是________。
A.只用于术前放疗或术后放疗患者B.只用于单纯放疗或姑息放疗患者C.术后放疗患者D.只用于术前放疗患者E.术前放疗、术后放疗、单纯放疗或姑息放疗患者食道癌两侧水平对穿野常用于
A.休息,低盐饮食,限制入水量,补蛋白质,给利尿剂B.休息,高热量、高蛋白饮食,保肝治疗C.休息,高热量限制蛋白质饮食,输入支链氨基酸D.休息,禁食,积极补足血容量及采用各种止血措施E.休息,控制输液量,纠正电解质紊乱,限制蛋白质治疗肝
有线电视干线采用架空明线安装时,一般市区杆距为()m。
【背景资料】某住宅小区工程,个体户张某受现场工长私下雇用,组织人员进行QTZ315型塔吊安装,张某从市场租来一台汽车吊装机并找来8名民工,口头向大家分配了任务。在安装完塔身、塔顶、平衡臂后,着手安装起重臂。起重臂作为细长构件,吊装时对吊点位置、吊索
短期债券一般不付息,而是到期一次性还本。()
依据《反垄断法》规定,下列不属于经营者集中的情形是()。
某县人民法院审理一民事案件过程中,要求县移动通信营业部提供某通信用户的电话详单。根据我国《宪法》规定,下列说法何者为正确?()
A、 B、 C、 D、 B
WhatdoesthemanaskMrs.Wellstodo?
最新回复
(
0
)