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
A、The effects of hot weather on animals. B、How animals survive in extreme temperatures. C、How changes in location affected dinos
A、The effects of hot weather on animals. B、How animals survive in extreme temperatures. C、How changes in location affected dinos
admin
2016-10-18
59
问题
Before I tell you about the interesting discovery related to the tyrannosaurus rex,(23)I need to review something we studied last semester: the differences between what we commonly called cold-blooded and warm-blooded animals. In warmblooded animals, birds and mammals for examples, the body temperature normally stays within a narrow range no matter what the outside temperature is. As a result, a warm-blooded animal is usually active in both cold and hot weather because the body temperature can adjust to the temperature as in the environment.(24)On the other hand, coldblooded animals, such as most reptiles, amphibians and insects, are unable to create enough heat internally to raise their temperature above the temperature of the environment. So, for example, the temperature of a cold-blooded animal falls when the environment is cool. I hope this extension is clear. Now moving on to the tyrannosaurus rex, you may know that dinosaurs being reptiles are generally believed to have been cold-blooded.(25)Well, a recent research study has found that a chemical composition of the bone of the tyrannosaurus rex was consistent with the bone of the animal that has a very narrow range of the internal temperature, indicating that it was probably warm-blooded.
23. What is the main topic of the lecture?
24. What is likely to happen to cold-blooded animals when the weather is cold?
25. Why does the speaker discuss tyrannosaurus rex?
选项
A、The effects of hot weather on animals.
B、How animals survive in extreme temperatures.
C、How changes in location affected dinosaurs.
D、The differences between warm-blooded and cold-blooded animals.
答案
D
解析
由“I need to review somethingwe studied last semester:the difference betweenwhat we commonly called cold-blooded andwarm—blooded animals.”可知这篇讲话主要讲的是恒温动物和变温动物的差异。
转载请注明原文地址:https://kaotiyun.com/show/UnF7777K
0
大学英语六级
相关试题推荐
A、Teenshavemoremeanstomakefriends.B、Teenshavelesslongingformorefriends.C、Teenshavebetterunderstandingoffriend
Veryoldpeopledoraisemoralproblemsforalmosteveryonewhocomesintocontactwiththem.Theirvalues,thiscan’tbe【B1】___
A、Checkhisphonebillagain.B、Writelettersinsteadofcalling.C、Keepthephonebillnexttothephone.D、Keeparecordofhi
A、Letter-writingskillsarevaluedless.B、Moresecretarialstaffisrequired.C、Thelocationofaperson’sworkgainsimportanc
Foreignaidisanimportantpartofinternationaleffortstoreducepoverty.TheUnitedStatesAgencyforInternationalDevelopm
A、ProfessorBurkewilldistributecalculatorstothestudents.B、Calculatorswillbeusefulintheclass.C、Statisticalcalculat
A、Hewasasportsfan.B、Helovedadventures.C、Hedislikedschool.D、Helikedhair-raisingstories.B短文开头提到约翰·缪尔的一生都在冒险,接着说道在他年
A、Theworldislackofconsumption.B、Foodandresourcesarenotenough.C、Somecountrieswanttohavesmallpopulation.D、Human
A、Tomakeparkingcarsonpublicplacesillegal.B、Tomakeitdifficulttoparkcars.C、Toincreasemorepublictransportation.
A、Housingandservices.B、Trafficandresources.C、Waterandelectricity.D、Pollutionandpopulation.A
随机试题
苏子降气汤的功用是
某企业有固定资产560万元,流动资产120万元,存货50万元,负债200万元,其中流动负债100万元,则其速动比率是()。
根据现行合同价款的调整要求,承包人采购材料和工程设备的,应在合同中约定主要材料或工程设备价格变化的范围和幅度,如没有约定,则单价变化超过()时,超过部分应做相应的调整。
某项技术为一项新产品设计及工艺技术,已使用3年,证明技术可靠,产品比同类产品性能优越。经了解,同类产品平均价格为150元/件,该产品价格为180元/件。目前该产品年销量为2万件。经分析,产品寿命还可以维持8年,但竞争者将会介入。由于该企业已较稳固地占领了市
阅读下面材料,回答问题。路灯下的守望没有晚风吹笛,没有月光煮酒,一盏盏灯火点亮孤独的城市。我匆匆吃过母亲中午走时预留的晚餐,躺坐沙发,开始用遥控器点播欢愉。荧屏里刀光剑影,红颜如玉,上演着绚烂的青春与江湖
其他存款性公司是指除中央银行以外的所有存款性公司。下列选项中,不属于其他存款性公司的是()
下列不属于夫妻共同财产的是:
近期,某公司推出了一款空调,其耗电量比市面上所有其他同类产品都要低。因此,该公司管理层认为,这款空调的销量将会超过市面上所有其他同类产品。以下哪项为真,最能质疑该公司管理层的判断?
求极限
The1982oilandGasActgivespowertopermitthedisposalofassetsheldbytheCorporation,and______theCorporation’sstat
最新回复
(
0
)