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 t
The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking t
admin
2013-11-20
53
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 【C1】______of this. Its front flippers(鳍状肢), used for steering and stability, are traces of feet.
Immense strength is【C2】______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 【C3】______ 400 horsepower. One specimen was reported to have towed(拖)a whaling vessel for seven hours at the 【C4】______of eight knot(节).
An angry whale will 【C5】______. A famous example of this was the fate of Whaler Essex, 【C6】______was sunk off the coast of South America early in the last century. More recently, steel ships have【C7】______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【C8】______of whales is their diving ability. The sperm whale dives to the bottom for his【C9】______food, the octopus(章鱼). In that search he is known to go as far down as 3 , 200 feet, where the【C10】______is 1 , 400 pounds, to a square inch. Doing so he will【C11】______underwater as long as one hour. Two special skills are involved in this storing up enough 【C12】______(all whales are air-breathed)and tolerating the great change in pressure. Just how he does it scientists have not【C13】______. It is believed that some of the oxygen is stored in a special 【C14】______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 a compensating mechanism that【C15】______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.
【C10】
选项
A、depth
B、pressure
C、level
D、size
答案
B
解析
空格后面说的是每平方英寸1400磅,这指的是压强,故选B。
转载请注明原文地址:https://kaotiyun.com/show/a4Qd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
TheWorld’sBest-SellingMedicineSinceancienttimes,peopleallovertheworldhaveusedwillowtostoppain.Thewillowt
TheWorld’sBest-SellingMedicineSinceancienttimes,peopleallovertheworldhaveusedwillowtostoppain.Thewillowt
TheWorld’sBest-SellingMedicineSinceancienttimes,peopleallovertheworldhaveusedwillowtostoppain.Thewillowt
"Don’tDrinkAlone"GetsNewMeaningInwhatmaybebadnewsforbarsandpubs,anEuropeanresearchgrouphasfoundthatpe
MedicineAwardKicksoffNobelPrizeAnnouncementsTwoscientistswhohavewonpraiseforresearchintothegrowthofcancer
BreakfastStudiesshowthatchildrenwhoeatbreakfastdobetterinschool.Itdoesn’ttakemuchfurtherthoughttobelieve
HelenKeller’sachievementsasanauthorandlecturerwereaninspirationtomillions.
HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt
HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt
随机试题
面横裂是由于A.一侧上颌突未能与内侧鼻突融合B.上颌突与外侧鼻突未融合C.上颌突与下颌突未融合D.原发腭突未能在一侧与继发腭突融合E.原发腭突未能在两侧与继发腭突融合
在设计与施工的接口关系中,应对( )内容的接口进度实施重点控制。
( )不必在会计报表附注中披露。
“一把钥匙开一把锁”,是说明教师劳动具有()
公安工作的内容由法律和( )所确定,必须按照党的政策和国家法律来实施。
人民检察院对公安机关及其人民警察在侦查活动中贪污、挪用、调换所扣押、冻结的款物及其利息的,要及时发现并纠正,依法实施监督。()
Anotherweek,anothercropofbadnewsfromthetelecomsindustry.BernieEbbers,thechiefexecutiveofWorldCom,hasbeenforc
按结构化设计的思想编制应用程序时,最重要的是_______。
Whatcanweconcludefromthetalk?
Englandisjustlyproudof______greatpoets,especially______inthe18thcentury.
最新回复
(
0
)