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、The cold, dark living environment. B、The incompressibility of water. C、The removal of the habitat. D、The high density of water
A、The cold, dark living environment. B、The incompressibility of water. C、The removal of the habitat. D、The high density of water
admin
2013-10-14
118
问题
To us, the environment in which fish dwell often seems cold, dark and mysterious. But there are advantages of living in water.[1]And they’ve played an important role in making fish what they are.
One is that water isn’t subject to sudden temperature changes. Therefore it makes an excellent habitat for a cold-blooded animal. Another advantage is the water’s ability to easily support body weight.[2]Fish has approximately the same density as water. So a fish in water is almost weightless. This weightlessness in turn means two things: one is a fish can get along with a light weight and a simple bone structure; the other is limitations to a fish’s size are practically removed. Yet there’s one basic difficulty in living in water — the fact that it is incompressible. For a fish to move through water, it must actually shove water aside. Most can do this by wiggling back and forth in snake-like motion. The fish pushes water aside by the forward motion of its head and with a curve of its body and its flexible tail. Next the water flows back along the fish’s narrowing size, closing in at the tail and helping the fish propel itself forward.
The fact that water is incompressible has literally shaped the development of fish. A flat and angular shape can be moved through water only with difficulty. And for this reason, fish have a basic shape that is beautifully adapted to deal with this peculiarity.
1. What is the passage mainly about?
2.What does fish have in common with water, according to the passage?
3. What shaped the development of fish?
选项
A、The cold, dark living environment.
B、The incompressibility of water.
C、The removal of the habitat.
D、The high density of water.
答案
B
解析
细节题。短文最后提到,水的不可压缩性(water is incompressible)决定了鱼进化的形状,故答案为[B]。
转载请注明原文地址:https://www.kaotiyun.com/show/uV27777K
0
大学英语六级
相关试题推荐
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmaybeharmfultooneanother’shealth.Couplesin【B1】______
A、Tocombatcompetitionandraiseproductivity.B、Toprovidethemwithmorejobopportunities.C、Tohelpthemmaintaintheirliv
Modempeoplewearmanymasksthatkeeptheirrealityconfinedand【C1】______,eventothemselves.Thepossibilityofencounterin
TheAmericanideaofrespectinghumanrightscamefromseveralsources.First,thecolonistshadbeen【B1】______.oftheirright
TheAmericanideaofrespectinghumanrightscamefromseveralsources.First,thecolonistshadbeen【B1】______.oftheirright
A、Tovisitmoreplacesinthecity.B、Tosnapasmanypicturesaspossible.C、Totakegoodcareofhercamera.D、Tosparesomet
A、Restaurant.B、Canteen.C、Supermarket.D、Hotel.D四个选项都是地点,据此可推断此题是问地点。此题的关键信息是sendingchampagneandstrawberriestoMYROOM,由此判
A、Heworksathome.B、Herelaxes.C、Hepaintspictures.D、Hegoesfishing.A推理判断题。该题问的是“男士通常在星期六做什么?”根据女士的问话Youarealwaysworki
Whenagamemaster(游戏设计师)commencecreatingandrunningagamingcampaign,shealmostalwaysdrawsinspirationsfrommovies,ficti
A、Hehasmanycreditcards.B、Hedidn’tconsultthewomanbefore.C、Hepaysmoreattentiontotheaccounts.D、Hepayslittleatt
随机试题
在调速系统中为了获得挖土机特性,可以引入()。
下列试验不属于免疫血清学试验的是
小蓟饮子组成中含有血府逐瘀汤组成中含有
患牙遇冷热刺激痛,刺激去除后疼痛仍然持续一段时间,食物碎片嵌入龋洞时出现剧烈疼痛。镜下见患牙有较大穿髓孔,表面覆盖食物残渣和炎性渗出物,其下方为炎性肉芽组织和新生的胶原纤维,深部有活力牙髓组织表现为血管扩张及慢性炎细胞浸润,可见不规则钙化物沉积。该疾病是
情绪ABC理论中的B是指()。
对于批准逮捕的决定,公安机关应当立即执行,并将执行情况及时通知()。
西方最早的教育著作是
数据库设计中反映用户对数据要求的模式是()。
PASSAGETWOWhatdoes"anegativegenderstereotype"inPara.2mean?
Foodwhichiskepttoolongdecaysbecauseitisattackedbyyeasts(酵母菌),moulds(霉)andbacteria(细菌).Thecanningprocess,ho
最新回复
(
0
)