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
Adaptation of Living Things Certain animals and plants develop characteristics that help them cope with their environment be
Adaptation of Living Things Certain animals and plants develop characteristics that help them cope with their environment be
admin
2016-07-17
51
问题
Adaptation of Living Things
Certain animals and plants develop characteristics that help them cope with their environment better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter, in providing protection, and in producing and protecting the young. That results in the evolution of more and more organisms(生物体)that are better fitted to their environments.
Each living thing is adapted to its way of life in a general way, but each is adapted especially to its own distinct class. A plant, for example, depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals(无机物). It depends upon its green leaves for using the sun’s energy to make food from inorganic chemicals. These are general adaptations, common to most plants. In addition, there are special adaptations that only certain kinds of plants have.
Many animals have adaptations that help them escape from their enemies. Some are hidden by their body color or shape, and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near.
Organisms have a great variety of ways of adapting. They may adapt in their structure, function, and genetics; in their development and production of the young; and in other respects. An organism may create its own environment, as do warm-blooded mammals(哺乳动物), which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage, but sometimes an organism is so well adapted to a particular environment that if conditions change, it finds it difficult or impossible to readapt to the new conditions.
In the first paragraph, the word "environments" could best be replaced by______.
选项
A、contexts
B、surroundings
C、neighbors
D、enemies
答案
B
解析
在不认识“environments”的情况下,我们可以通过上下文来猜测该词的意思。根据第一段内容,主要讲什么是生物适应,其实根据常识也可以判断,适应无非是针对生存环境而言的,那么可以初步断定“environments”意为“环境”。而A项contexts意为“上下文,语境”,C项neighbors意为“邻居”,D项enemies意为“敌人”,都不符合题干要求。 B项surroundings出现在倒数第二段“The coats of deer are colored to mix with thesurroundings.”因此正确答案是B。
转载请注明原文地址:https://kaotiyun.com/show/rLhd777K
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
Theparentshavetorestraintheirdaughterfromrunningoutintothestreet.
BedwettingMillionsofkidsandteenagersfromeverypartoftheworldwetthebedeverysinglenight.It’ssocommonthatthere
U.S.,EuropeanDrugOfficialsApproveInhaledInsulinAformofinsulinforpeoplewithdiabetestotakebymouthisexpectedto
ThepeoplewhospeakEsperantohopethatthelanguagesomedaywillbecometheinternationallanguagefortrade,science,anddip
Wealsowanttousethewatertoirrigatebarrendesertland.
HeartAttackThroughouttheUnitedStates,andespeciallyinbigcitiesandruralareas,tensofthousandsofpeoplewithhearts
Tosolvetheproblemofdrymouths,oneisadvisedtotakecoolmilk.ThewritercitesGeothetoprovethatonecanchangeone’
AHealthProfileAhealthprofileisaportraitofallofthefactorsthatinfluenceyourhealth.Todrawyourhealthprofile,y
Thefoodisinsufficientforthreepeople.
Instatistics,themathematicalmeanisobtainedbydividingthesumofagroupofscoresbythenumberofscores.
随机试题
在计算机中,一个二进制码元0或1是最小的信息表示单位。称为__________或__________,简写为b。通常用8位二进制数构成一个Byre(字节),简写为B,作为计算机存储系统中基本的数据中位。
白喉棒状杆菌产生外毒素是因为细菌基因发生了
下列对补偿形式与标准的表达正确的是()。
在轴间(含轴线),剖到了几根钢筋混凝土梁?
教生物课的李老师为了让学生更真切地了解植物导管的功能,他事先把带叶的枝条插入红色溶液里,放在温暖而有阳光的地方晒几小时。上课时,将枝条一段一段剪下来,分到学生手里。他一边讲一边提问,学生一边剥一边思考一边回答。(1)简要说明李老师采用的是什么教学方法?
公文应在()装订。
表情在交流过程中非常重要,在交谈过程中,如果一方的表情反映出其不耐烦或厌恶的情绪,则交谈不可能继续下去。以上论断是建立在()假设基础上的。
人才强国战略强调,在建设中国特色社会主义伟大事业中,要把人才作为推进事业发展的关键因素。为此,我国要()
Somepeopleoughttodefendtheworkaholic.Thesepeopleareunjustlyaccused,abused,anddefamed--oftentermedsickormorb
shoplifting
最新回复
(
0
)