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
89
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
Lawyerswhoofferfreelegalhelpfortheirclientsarecommonlycalled"probono"lawyers.Inrecentyears,therehasbeen【B1】_
A、Toattendtheorientation.B、Tomeethisprofessor.C、Tofindsomebooks.D、Tousethecomputer.C
A、Hehasthreeclassesinarow.B、Hisclassbeginsatoneo’clock.C、Hisclassmeetsforthreehours.D、Hewillbeinclassall
A、Theyaregcingtohavepart-timejobsinthehousingoffice.B、Theyaretrainingtobecomeresidentadvisersindormitories.C
A、Letter-writingskillsarevaluedless.B、Moresecretarialstaffisrequired.C、Thelocationofaperson’sworkgainsimportanc
Businessesarestructuredindifferentwaystomeetdifferentneeds.Thesimplestformofbusinessiscalledan【B1】______pro
Inapurelycompetitivemarket,thesupplierofgoodsandserviceshasnocontroloverthemarketprice,becauseheproducestoo
Forthispart,youareallowed30minutestowriteanessayonenthusiasmbyreferringtothesaying"Ourdestinyoffersnotthe
IntheBritishMuseumonaSundayafternoon,ancientfaceslookbackatchildrenandadultsalike.Insidetheirglasscases,pha
A、Catshaveavarietyofmicrobeslivingintheirfur.B、Forcatbites,therealdangercomesfromPasteurellamultocida.C、One
随机试题
杀灭细菌芽胞最常用最有效的方法是
常用作保护剂的是
黄芩具有的功效是
行动公众指的是不仅意识到组织行为引起的共同问题的存在,而且准备或已经采取某种解决问题的行动的公众。根据上述定义,以下哪项涉及行动公众?
ABC会计师事务所的A注册会计师负责审计甲公司等多家被审计单位2017年度财务报表。与存货审计相关事项如下:(1)在甲公司开始盘点存货前,A注册会计师发现甲公司仓库有大批受托代存存货,甲公司管理层说明了具体情况,审计项目组成员表示理解,并已经将这些情况记
关于政府单位库存物品的会计处理,下列说法中不正确的是()。
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
文法G=(VT,VN,P,S)的类型由C中的(32)决定。若GO=({a,b},{S,X,Y},P,S),P中的产生式及其序号如下:1:S→XaaY2:X→Dqb3:Y→XbXla则GO为(33)型文法,对应于(34),由G
Excel工作表D列保存了18位身份证号码信息,为了保护个人隐私,需将身份证信息的第9到12位用“*”表示,以D2单元格为例,最优的操作方法是():
A坐B电影C滑冰D声音E集合F举办例如:她说话的(D)多好听啊!我的爱好很多,比如游泳、()、画画儿和跳舞。
最新回复
(
0
)