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
28
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、witnessed
B、determined
C、applied
D、calculated
答案
B
解析
转载请注明原文地址:https://jikaoti.com/ti/lmJsFFFM
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
WelearnfromthefirstparagraphthatlaughterDoctorshavefoundthatlaughter
FDAhasapprovedtheplanofusingHIVtocurecancerinhumans.Othercountriesarealsoexpectedtobeginclinicalgenethera
HappyBirthdaytoYouThemainproblemindiscussingAmericanpopularcultureisalsooneofitsmaincharacteristics:itwon
Inthebeginningofparagraphonewearetoldthatscientistscannotagree______.Ageneforchopsticksflexibilityisfoundt
Thepassageconfirmsthatusingtanningequipmentisharmfultoone’shealth.Thehighestrateofskincancersisfoundinteen
DoPatientsTrustDoctorsTooMuch?Earlierthisyear,theAmericanCollegeofSurgeons,thenationalscientificandeducati
CaffeineCaffeineisprobablythemostwidelyuseddrugintheworld.Humanshavebeenconsumingcaffeineforhundredsofyea
ConsumerGoodsConsumerproductsaregoodsandservicesdestinedforthefinalconsumerforpersonal,family,orhouseholdus
Whereisthenapkinnormallyplacedduringthemeal?Thenapkinisusedonlyfor
Ourlivesareintimatelyboundupwiththeirs.
随机试题
能增加混凝土和易性,同时减少施工难度的混凝土外加剂有()。
A头孢他啶B克拉维酸C万古霉素D羧苄西林E头孢曲松治疗严重铜绿假单胞菌感染应选用
某男,28岁。素体羸瘦,有肺结核病史,半年前出现左侧睾丸部隐痛、坠胀,阴囊发凉,伴五心烦热、午后潮热、盗汗、倦怠、腰痠,食少,查:左侧附睾尾部有不规则的局限性结节,质硬,触痛明显,化验血沉38mm/h。诊断为
需夫妻双方同时治疗的炎症是
每股股票所代表的实际资产的价值,可称为()。Ⅰ.内在价值Ⅱ.账面价值Ⅲ.每股净资产Ⅳ.股票净值
国家的教育法规是指由国家制定的关于教育的()
搬运工负重徒步上楼,刚开始保持匀速,用了30秒爬了两层楼(中间不休息);之后每多爬一层多花5秒、多休息10秒。那么他爬到七楼一共用了多少秒?
下面属于黑盒测试方法的是
EachtimeKristyIngramtakesarun,herappsareupandrunningbeforesheeventakesoff."IusetechnologyeverytimeI
Povertyisastoryaboutus,notthemA)Toooftenstill,wethinkweknowwhatpovertylookslike.It’sthewaywe’vebeent
最新回复
(
0
)