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
66
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、abandon
B、attack
C、leave
D、board
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/DqLd777K
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
TryingtoFindaPartnerOneofthemoststrikingfindingsofarecentpollintheUKisthatofthepeopleinterviewed,one
AdifferenttechniquesBsocialrelationshipsandcommunicationClanguageandinformationDseveralcausesworkingtogetherEa
Theworkersfinallycalledoffthestrikes.
ScientistsDevelopWaysofDetectingHeartAttackGermanresearchershavecomeupwithanewgenerationofdefibrillators(除颤
Animal’s"SixthSense"AtsunamiwastriggeredbyanearthquakeintheIndianOceaninDecember,2004.Itkilledtensofthousan
Theauthordevelopshispointbystartingwith______.ItcanbeinferredfromthelastparagraphthatDevelopingReadingSkill
TheRiverWensumflowsbyNorwich.PeoplehavelivedbytheRiverWensumforatleast2,000years.
Stinking(发臭的)BusesStinkingbusesjam(挤满)thecrowdedstreet.Drivers(51)atoneanotherandhonk(鸣喇叭)theirhorns.Smog(烟雾)hurt
WaterFromthebeginning,waterhasfurnishedmanwithasourceoffoodandahighwaytotravelupon.Thefirst(51)arosewhere
FirstSelf-containedHeartImplantedApatientonthebrinkofdeathhasreceivedtheworld’sfirstself-containedartificia
随机试题
简述公平理论的定义和主旨。
A、食管内异物感B、吞咽困难C、两者均有D、两者均无贲门失驰症_______。
破伤风是
导致妇科疾病的外来因素中,外感常以何邪为主
流行性出血热潜伏期一般为
由于压缩的氧气接触油脂会________,可以在安装前必须进行严格的脱脂处理。施工操作使用的工具也不能带油。
如某建筑工程承包合同中订有仲裁条款,则双方结算价款产生纠纷时,可()。
居民会议的特征不包括()。
下列说法中正确的是:
要存放如下矩阵的数据,在不浪费存储空间的基础上,能实现声明的语句是123246369
最新回复
(
0
)