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
49
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
"Don’tDrinkAlone"GetsNewMeaningInwhatmaybebadnewsforbarsandpubs,anEuropeanresearchgrouphasfoundthatpe
MedicineAwardKicksoffNobelPrizeAnnouncementsTwoscientistswhohavewonpraiseforresearchintothegrowthofcancer
WhereHaveAlltheBeesGone?Scientistswhostudyinsectshavearealmysteryontheirhands.Allacrossthecountry,honey
Single-parentKidsDoBestSinglemumsarebetteratraisingtheirkidsthantwoparents—atleastinthebirdworld.Mother
HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt
HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt
HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
随机试题
肺经腧穴可治疗除哪项以外的病症
设计概算可分为()①单位工程概算;②一般土建工程概算;③单项工程综合概算;④建设项目总概算;⑤预备费概算
某科研所对环境的振动要求较高,下列条件中,哪一组较合适?[2006-20]Ⅰ.位于城市郊区Ⅱ.工程地质条件好,地基承载力高Ⅲ.位于国家铁路干线和城市快速路旁Ⅳ.位于城市市中心区内Ⅴ.水、电、气等市政配套条件较好的地区
铁路加筋土挡土墙的单级高度不宜大于()m。
良好的绩效管理在组织管理中的作用包括()。
根据艾里克森的理论,老年期的发展任务是获得
(2008年真题)依照唐宋时期法律规定,殴打或谋杀祖父母、父母的行为构成“十恶”犯罪中的
魏某受恐怖活动组织的指派潜入中国大陆进行恐怖活动,先后杀害3人,绑架1人。魏某的行为构成何种犯罪?()
新民主主义革命时期,党领导的统一战线,先后经过了第一次国共合作的统一战线、工农民主统一战线、抗日民族统一战线、人民民主统一战线等几个时期,积累了丰富的经验。其中,最根本的经验就是
设S(x)=∫0x|cost|dt.(1)证明:当nπ≤x<(n+1)π时,2n≤S(x)<2(n+1);(2)求.
最新回复
(
0
)