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
73
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、mentally
B、artificially
C、manually
D、automatically
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/LqLd777K
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
EarBreakthroughNewresearchpublishedinthejournalCurrentBiologyhasaddedsignificantlytounderstandingofhowthee
LifeExpectancyintheLastHundredYearsAhundredyearsago,lifeexpectancyindevelopedcountrieswasabout47;intheea
CigarsInstead?Smokingoneortwocigarsadaydoublestheriskofcancersofthelip,tongue,mouth,andthroat,according
ProlongingHumanLife1Prolonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldhave
LivingAloneCouldBeGoodforYourWeightGoodnewsforpeoplelivingalone:Aforthcomingpapershowsthatsingleadults—o
Stinking(发臭的)BusesStinkingbusesjam(挤满)thecrowdedstreet.Drivers(51)atoneanotherandhonk(鸣喇叭)theirhorns.Smog(烟雾)hurt
Theauthoriskindtothechildrenbecauseshewantedtoplayanimportantroleinthechildren’slives.Theauthormakesalot
WaterFromthebeginning,waterhasfurnishedmanwithasourceoffoodandahighwaytotravelupon.Thefirst(51)arosewhere
ELNinoWhilesomeforecastingmethodshadlimitedsuccesspredictingthe1997ELNino(厄尔尼诺现象,指赤道东太平洋南美沿岸海水温度剧烈上升的现象)afewm
FirstSelf-containedHeartImplantedApatientonthebrinkofdeathhasreceivedtheworld’sfirstself-containedartificia
随机试题
A.甲氧苄啶(TMP)B.环丙沙星C.萘啶酸D.呋喃唑酮E.四环素可治疗支原体、衣原体肺炎的药物是
百部杀虫的功效,可用于
凉膈散的组成中含有的是( )。
已确认的政府补助需要返还的,下列情况正确的处理方法是()。
试论述经济与高等教育的关系。
根据《中华人民共和国刑法修正案(九)》,下列说法错误的是()。
从20世纪90年代“人类基因工程”计划启动之日起,美国、日本和欧洲等展开了一场激烈的基因专利争夺战。因为谁拥有专利,就意味着谁就能在国际上获得_______基因产业的“王牌”,谁就能拥有今后基因开发的庞大市场。为此,美国等少数发达国家大量地将阶段性研究成果
[*]
设z=z(z,y)由z+ez=xy2确定,则dz=________.
Thelargestanimalthateverlivedonlandorinwaterstillexists.Noteventhegiantdinosaurswereaslargeassomewhales.
最新回复
(
0
)