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 th
The Greatest Mystery Of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking th
admin
2009-06-15
38
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/cFLd777K
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
FDAhasapprovedtheplanofusingHIVtocurecancerinhumans.TheHIVvirushascausedmoredeathsindevelopedcountries.
HappyBirthdaytoYouThemainproblemindiscussingAmericanpopularcultureisalsooneofitsmaincharacteristics:itwon
FirstaidmaybringaboutallthefollowingresultsEXCEPTBeforeweadministerfirstaidtoavictim,itisveryimportantfor
DrugReactions--aMajorCauseofDeathAdversedrugreactionsmaycausethedeathsofover100,000UShospitalpatientseach
A.diseasepreventionB.healtheducationC.healthybehaviorD.unhealthybehaviorE.otherhealthservicesF.manyvaccinesP
AtosendgoodstovariouspartsoftheworldBatanytimeduringtheyearChasgreatlypromotedtradeDisitpossibletopro
DungtodeathFieldsacrossEuropearecontaminatedwithdangerouslevelsoftheantibiotics(抗生素)giventofarmanimals.The
ProlongingHumanLifeProlonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldh
CaffeineCaffeineisprobablythemostwidelyuseddrugintheworld.Humanshavebeenconsumingcaffeineforhundredsofyea
Ourlivesareintimatelyboundupwiththeirs.
随机试题
影响X线衰减的因素不包括
关于散射线及其影响因素的叙述,错误的是
A、连接两侧同名双尖牙、磨牙颊、舌尖构成的突向下的曲线B、连接两侧同名磨牙颊、舌尖构成的突向下的曲线C、可分为前后两段,前段平直,后段略凸向下D、前段平直,自尖牙、双尖牙及第一磨牙远中逐渐降低,第二、三磨牙颊尖又行上升E、第
海关行政裁定是一项比较新的海关管理制度。下列关于海关行政裁定制度作用的描述,错误的是:
根据《证券投资基金运作管理办法》及有关规定,债券基金应有()以上的资产投资于债券。
从整个社会考察,利息率的最高界限是()。
对于商品经济运行来讲,金融市场的主要功能有()。
油画的风景写生步骤是确定构图,确定色彩关系,解决空间层次关系。()
在中国古代文化中,最神圣的典礼,非封禅莫属。封禅是古代君王祭祀天地的典礼,是宣示天地认可帝王执政合法性的仪式。秦汉时期,在封禅的理论中,都是以泰山作为封禅地点的。在泰山上筑坛祭天叫做封,辟场祀地叫做禅。泰山成为封禅的圣地,不仅仅因为它的自然高度,更主要的是
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroughidentification.Childrenidentify【C1】______aparen
最新回复
(
0
)