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
77
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://kaotiyun.com/show/FqLd777K
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
AforyoungerandolderpeopleBtotheproperfunctionofyourmemoryCiscalledlong-termmemoryDthecapacitytostorewhat
ABiologicalClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclo
In1816itseemedinevitablethatSouthernstateswouldbreakawayfromtheUnion.
AvalancheandItsSafetyAnavalancheisasuddenandrapidflowofsnow,oftenmixedwithairandwater,downamountainside.A
AvalancheandItsSafetyAnavalancheisasuddenandrapidflowofsnow,oftenmixedwithairandwater,downamountainside.A
AnimalsintheDesertSomedesertanimalscansurvivetheverystrongsummerheatanddrynessbecausetheyhaveveryunusualcha
ThewriterbelievesthatthepopulationexplosionresultsfromInParagraph3,thephrase"thisneed"refersto
ThemethodusedbytheColumbiaUniversityresearcherscanpredictElNinoafewmonthsinadvance.AccordingtoaChineserepo
WaterFromthebeginning,waterhasfurnishedmanwithasourceoffoodandahighwaytotravelupon.Thefirst(51)arosewhere
TheGreatestMysteryofWhalesThewhaleisawarm-blooded,air-breathinganimal,givingbirthtoitsyoungalive,suckingt
随机试题
从中华人民共和国成立到社会主义改造基本完成,我国社会的性质是()
在Word的编辑状态中,编辑文档中的A2,应使用“格式”菜单中的命令是()。
胆道蛔虫病腹痛特点是剑突下
患者,男,60岁。高血压病史20年,反复劳累时心前区压榨性疼痛1年,休息一段时间或舌下含服硝酸甘油数分钟后即可缓解,近5个月以来无发作。辅助检查:血TC5.0mmol/L,LDL-C2.9mmol/L,TG6.1mmol/L,HDL-C0.9
男性,40岁,患十二指肠溃疡,择期经上腹正中切口行胃大部切除术,并置切口内乳胶片引流。正常情况下.该患者拆线时间应为术后
某女,经前或经期小腹冷痛,喜暖拒按,经量少,色暗有块,苔白腻,脉沉紧。辨证属
含鞣质中药乙醇提取液回收乙醇后溶于水,要使鞣质自水溶液中沉淀析出,可选用的是
服务项目管理中,可通过运用()方法在项目全范围内分解和定义各层次工作包。
法律在调整人们行为的过程中所形成的权利义务关系即为()。
()的项目不适合使用总价合同。
最新回复
(
0
)