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
48
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.
【C7】
选项
A、had
B、operated
C、seen
D、caught
答案
A
解析
“have+something+过去分词”是一固定结构。
转载请注明原文地址:https://kaotiyun.com/show/p4Qd777K
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
ManyWomenWhoBeatCancerDon’tChangeHabitsManywomenwhobattlebreastcancerwilltellyouit’salife-changingexperi
ManyWomenWhoBeatCancerDon’tChangeHabitsManywomenwhobattlebreastcancerwilltellyouit’salife-changingexperi
WhereHaveAlltheBeesGone?Scientistswhostudyinsectshavearealmysteryontheirhands.Allacrossthecountry,honey
WhereHaveAlltheBeesGone?Scientistswhostudyinsectshavearealmysteryontheirhands.Allacrossthecountry,honey
BreakfastStudiesshowthatchildrenwhoeatbreakfastdobetterinschool.Itdoesn’ttakemuchfurtherthoughttobelieve
BreakfastStudiesshowthatchildrenwhoeatbreakfastdobetterinschool.Itdoesn’ttakemuchfurtherthoughttobelieve
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
ThepassageindicatesthatWhatkindofanimalhasagreaterabilitytoregeneratealostpart?
WHO:ManyChildren’sDeathsPreventableOverfivemillionchildrendieeachyearfromdisease,infectionsandaccidentsrelat
随机试题
阅读材料,回答问题。材料12013年9月7日,习近平在哈萨克斯坦纳扎尔巴耶夫大学回答学生问题时指出,我们既要绿水青山,也要金山银山。宁要绿水青山,不要金山银山,而且绿水青山就是金山银山。我们绝不能以牺牲生态环境为代价换取经济的一时发展。
良好的献血环境不包括
在口腔保健中,龋病的二级预防包括
A.瑞格列奈B.格列本脲C.罗格列酮D.二甲双胍E.阿卡波糖属非磺酰脲类促胰岛素分泌剂的药物是()。
下列句子中,划线字不是使动用法的一项是()。
根据《中华人民共和国义务教育法》,确定教科书的价格所遵循的原则是()。
习得性无助是指在多次经历过消极体验之后,再面临同样或类似情境时个体所产生的一种无能为力的心理状态与行为表现。下列属于习得性无助的一项是()。
人类社会历史发展的决定力量是()
下列可以安装在文件服务器上的网络操作系统,说法不正确的是
Thetaskofbeingacceptedandenrolledinauniversitybeginsearlyforsomestudents.Longbeforetheygraduatefromhighscho
最新回复
(
0
)