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
The Greatest Mystery Of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking the
The Greatest Mystery Of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking the
admin
2012-09-10
57
问题
The Greatest Mystery Of Whales
The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them —and, like all mammals, originated on land. There are many(51)of this. Its front flippers (鳍状肢), used for steering and stability, are traces of feet.
Immense strength is(52)into the great body of the big whales, and in fact most of a whale’s body is one gigantic muscle. The blue whale’s pulling strength has been estimated(53)400 horsepower. One specimen was reported to have towed (拖) a whaling vessel for seven hours at the(54)of eight knots (节).
An angry whale will(55)a ship. A famous example of this was the fate of whaler Essex,(56)was sunk off the coast of South America early in the last century. More recently, steel ships have(57)their plates buckled (使弯曲) in the same way. Sperm whales (抹香鲸) were known to seize the old-time whaleboats in their jaws and crush them.
The greatest(58)of whales is their diving ability. The sperm whale dives to the bottom for his(59)food, the octopus (章鱼). in that search he is known to go as far down as 3,200 feet, where the(60)is 1,400 pounds, to a square inch Doing so he will(61)underwater long as one hour. Two special skills are involved in this: storing up enough(62)(all whales are air-breathed) and tolerating the great change in pressure. Just how he does it scientists have not(63). It is believed that some of the oxygen is stored in a special(64)of blood vessels, rather than just held in the lungs. And it is believed that a special kind of oil in his head is some sort of compensating mechanism that(65)adjusts the internal pressure of his body. But since you can’t bring a live whale into the laboratory for study, no one knows just how these things work.
选项
A、number
B、degree
C、distance
D、rate
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/xqLd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
LifeExpectancyintheLastHundredYearsAhundredyearsago,lifeexpectancyindevelopedcountrieswasabout47;intheea
ABiologicalClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclo
WhydoestheauthorthinktheEiffelToweristransformedintosymbolofaworldonthemove?Whatseemsstrangetotheauthor?
HowtheBodyKeepstheSameTemperatureThetemperatureofyourbodyshouldbealwaysjustthesame,nomatterwhethertheweath
AnimalsintheDesertSomedesertanimalscansurvivetheverystrongsummerheatanddrynessbecausetheyhaveveryunusualcha
Atmosphere1.Theatmosphereisamixtureofseveralgases.Thereareabouttenchemicalelementswhichremainpermanentlyingas
Stinking(发臭的)BusesStinkingbusesjam(挤满)thecrowdedstreet.Drivers(51)atoneanotherandhonk(鸣喇叭)theirhorns.Smog(烟雾)hurt
SupermarketMostsupermarketsneedaverylargefloorarea,sometimesatleasttentimesasbigasthatofanordinaryshop.The
IDislikeFillingupFormsOfallthingsintheworld,Imostdislikefillingupforms;infact,Ihaveapositivehorroro
Theyonlyhavealimitedamountoftimetogettheirpointsacross.
随机试题
一次事故中死亡职工在( )的事故称为死亡事故。
Buttheydidfindthatwhoappearsinadreamhasa______greaterinfluenceonmoodthanwhatoccursinthedream.
表示自动曝光控制的英文宿写是
某高层建筑主楼采用单元式隐框玻璃幕墙,A公司作为设计和施工双甲级资质的专业公司,承接了幕墙的设计和施工任务,并根据B设计院的建筑图、结构图进行了幕墙施工图的深化设计,并在C试验室进行了“三性试验”。该幕墙系统采用了断桥铝型材和钢化中空LOW—E玻璃,单元板
智育的根本任务是()。
未成年人及不能辨认自己行为的精神病人的权益遭到行政机关及其工作人员的违法行使职权造成损害的,赔偿请求人是()。
试述内隐记忆与外显记忆各自的含义及它们之间的区别。
[*]
下列关于路由器技术指标的描述中,错误的是()。
Youwillhearfivedifferentbusinesstelephonecalls.Foreachextracttherearetwotasks.ForTaskOne,choosethereceiver’s
最新回复
(
0
)