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
44
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.
【C13】
选项
A、witnessed
B、determined
C、applied
D、calculated
答案
B
解析
上文谈到鲸鱼为什么能够在水下承受巨大的压力,科学家们还没有找到答案。选项中的determine的意思是“确定”,此词放入空格处意思讲得通,其他几个选项讲不通,故选B。
转载请注明原文地址:https://kaotiyun.com/show/e4Qd777K
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
Foryoungchildren,gettingdressedisacomplicatedbusiness.
ElectromagneticEnergy1.Whitelightseemstobeacombinationofallcolors.Theenergythatcomesfromasourceoflight
Theirparentsoncelivedunderverysevereconditions.
ThirstforOilWorldwideeveryday,wedevourtheenergyequivalentofabout200millionbarrelsofOil.Mostoftheenergy
BreakfastStudiesshowthatchildrenwhoeatbreakfastdobetterinschool.Itdoesn’ttakemuchfurtherthoughttobelieve
TeachingandLearningMedicineAwardTwoscientistswhohavewonpraiseforresearchintothegrowthofcancercellscouldb
A.imaginativelyB.recentlyC.carefullyD.unscientificallyE.accidentallyF.satisfactorilyInancienttimes,rainmakerstri
HelenKeller’sachievementsasanauthorandlecturerwereaninspirationtomillions.
AboutonemillionAmericansarediagnosedannuallywithskincancer.
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
随机试题
急性胃炎最常见类型是
患者,女,29岁。未产妇,平素月经规律,29天一次,每次持续3~5天。其末次月经是2月11日,距今已有9周,现感疲乏,乳房触痛明显。化验报告提示尿妊娠反应(+),此化验的机制是查体内的
患者女,39岁,交通事故致脊髓损伤,出现尿潴留,遵医嘱给予导尿。对于膀胱高度膨胀,第一次放尿量不可超过
证券公司应向()报送年度报告。
某县城一家房地产开发企业2016年度受让一宗土地使用权,支付土地使用权价款1000元并缴纳契税,取得契税完税凭证。1月,将其中80%的面积用于开发建造住宅楼,当年年末建成后,将80%的建筑面积直接对外销售,取得不含税销售收入7500万元,选择简易方式计算增
秦始皇三十三年,咸阳令审判一起盗羊案件时,误将系羊绳圈的价值计人赃值,与秦律规定的计赃方法不符。依照秦律,该县令的行为已构成犯罪,其所触犯的罪名是()(2013年一综一第34题)
设fn(x)=1一(1一cosx)n,求证:设有
计算机软件的构成是
Youshouldhaveputthemilkintheicebox;Iexpectit______undrinkablebynow.
Ajarcontainsonlyred,yellow,andorangemarbles.Ifthereare3red,5yellow,and4orangemarbles,and3marblesarechose
最新回复
(
0
)