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
2015-07-16
69
问题
Before I tell you about the interesting discovery related to Tyrannosaurus rex, I need to review something we studied last semester—the difference between what are commonly called cold-blooded and warm-blooded animals. In warm-blooded animals, birds and mammals, for example, 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 its body temperature can adjust to the temperature of its environment.
On the other hand, cold-blooded 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 distinction is clear. Now, moving on to Tyrannosaurus rex, you may know that dinosaurs, being reptiles, are generally believed to have been cold-blooded. Well, a recent research study found that the chemical composition of the bones of Tyrannosaurus rex was consistent with the bones of an animal that has a very narrow range of internal temperature, indication that it was probably warm-blooded.
6. What is the main topic of the lecture?
7. What is likely to happen to cold-blooded animals when the weather is cold?
8. 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-and cold-blooded animals.
答案
D
解析
这道题具有一定的迷惑性,因为四个选项里都包含这段课堂教学讲话里出现过的单词。在这种情况下,首先要确定各个选项的中心词。四个选项的中心词依次是:effects,survive in extreme temperatures,changes in location,differences. 这样就比较容易排除“炎热天气对动物的影响”、“动物怎样在极端气温下生存”和“地点变化对恐龙的影响”,从而判断出听力材料的主题是选项D(冷血动物与热血动物的区别)。Tyrannosaurus rex:暴龙。
转载请注明原文地址:https://kaotiyun.com/show/jfQ7777K
0
大学英语六级
相关试题推荐
Inmostpartsoftheworld,therelationbetweenpopulationandresourcesisalreadyunfavorableandwillprobablybecomeevenm
Adayafterthemobilephonecelebratedits40thbirthday,Facebookhasproducedsomethingthatithopestomakecertainofthe
EducationTechnology:Crucial,orJustGadgets?A)Underenormouspressuretoreform,thenation’spublicschoolsarespendingmi
A、Nervous.B、Overworked.C、Satisfied.D、Delighted.B对话开头女士说她一整天都很忙,她不得不加班工作。由此可知,女士感觉今天劳累极了。
A、Becheerfulevenwhenyouareprovoked.B、Neverseemtobenervous.C、Trytowindebatingpoints.D、Neversay"Idon’tknow."
HowSafeIsYourCellPhone?A)IttakesalittleextraworktogetintouchwithAndreaBoland.TheMainestaterepresentativea
MarriageisconsideredanoccasionofgreatrejoicingintheWestasitisinChina.ButintheWestthebrideissupposedtobe
A、Atthepostoffice.B、Attheshop.C、Attherestaurant.D、Atthebank.B
Facebookisfacingcriticismafteritemergedithadconductedapsychologyexperimentonnearly700,000userswithouttheirkno
Allourdreamshavesomethingtodowithourfeelings,fears,longings,wishes,needsandmemories.Ifapersonishungry,orti
随机试题
若X为离散型随机变量,分布函数为F(x)=P(X≤x},若满足P{a<X<b}=F(b)-F(a),则一定有P{X=b}=_____.
在windows7中,关于“任务栏”说法正确的是______________。
男,35岁,双下肢及眼睑水肿3天。查体:颜面及双眼睑浮肿,肝脾肋下未及,移动性浊音(+),双下肢凹陷性水肿。辅助检查:尿蛋白(++++),红细胞3~6个/HP;血清ALT、AST正常,总蛋白49g/L,球蛋白35g/L,胆固醇10mmol/L,BUN7mm
中国的郊区化主要表现在()。
A、 B、 C、 D、 A第一组图形的内部图形分别顺时针移动一格,第二组也满足此规律。
纳税义务人或其代理人应在海关填发税款缴纳证之日起()内,向指定银行缴纳税款。
IEEE802.3的物理层协议10BASE-T规定从网卡到集线器的最大距离为()。
指令”Circle(1500,1200),1000…0.5”将会绘制出的图形为()。
Readthearticlebelowaboutonecomment.ChoosethecorrectwordtofilleachgapfromA,BorContheoppositepage.
Owingtoan______lackoflower-incomehousing,themunicipalgovernmentisembarrassedbytheimpressinghousingissue.
最新回复
(
0
)