首页
登录
职称英语
[originaltext] Before I tell you about the interesting discovery related to
[originaltext] Before I tell you about the interesting discovery related to
游客
2023-08-17
59
管理
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://tihaiku.com/zcyy/2934852.html
相关试题推荐
[originaltext]Thisroomisdevotedtoelectricfish.Theeelinthetankbe
[originaltext]WelcometotheNewBedfordinstitute’s,seriesoflectureson
[originaltext]WelcometotheNewBedfordinstitute’s,seriesoflectureson
[originaltext](16)I’msurealmosteveryoneofyoulookedatyourwatchor
[originaltext](16)I’msurealmosteveryoneofyoulookedatyourwatchor
[originaltext](16)I’msurealmosteveryoneofyoulookedatyourwatchor
[originaltext]Manystudieshavebeenmaderecentlyabouthandpreferencein
[originaltext]Manystudieshavebeenmaderecentlyabouthandpreferencein
[originaltext](9)Ourelectriccaristhewayofthefuture.Automobileman
[originaltext]W:WelcometoBSCCinema.Wouldyouliketopurchaseamovietick
随机试题
[originaltext]W:Sam,couldyoureviewtheresultsofthesurveyonleisurespo
德育过程主要是培养学生知、情、意、行的过程,这一过程具有()。A.绝对性 B
根据相对购买力平价理论,一组商品的平均价格在英国由5英镑涨到6英镑,同期在美国由
屋架如图所示,则A杆的内力值最接近( )kN。(拉力为(+),压力为(-))
心下痞闷,按之则痛,或心胸闷痛,或咳痰黄稠,舌红苔黄腻,脉滑数,宜选用的方剂是A
下列关于药物稳定性的叙述,正确的是A、通常将反应物消耗一半所需的时间称为有效期
某中学举行运动会,孙某报名参加的是初中部男子800米比赛,当孙某跑完800米时,
下列选项中,关于技术性失业的说法,错误的是()。A.技术性失业属于一种
2016年12月20日,甲公司以4800万元购入一台设备并立即投入使用,预计使用
证实DNA合成是半保留复制的是A.WatSon&CriCk B.WatSon&
最新回复
(
0
)