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
It was previously believed that dinosaurs were cold-blooded creatures, like reptiles. However, a recent discovery has lad resear
It was previously believed that dinosaurs were cold-blooded creatures, like reptiles. However, a recent discovery has lad resear
admin
2010-04-12
33
问题
It was previously believed that dinosaurs were cold-blooded creatures, like reptiles. However, a recent discovery has lad researchers to believe they may have been warm- blooded. The fossilized remains of a 66 million-year-old dinosaur’s heart were discovered and examined by x-ray. The basis for the analysis that they were warm- blooded is the number of chambers in the heart as well as the existence of a single aorta (主动脉).
Most reptiles have three chambers in their hearts, although some do have four. But these that have four chambers, such as the crocodile, have two arteries (动脉) to mix the oxygen-heavy blood with oxygen-lean blood. Reptiles are cold-blooded, meaning that they are dependent on the environment for body heat. Yet the fossilized heart had four chambers in the heart as well as a single aorta. The single aorta means that the oxygen-rich blood was completely separated from the oxygen-poor blood and sent through the aorta to all parts of the body.
Mammals, on the other hand, me warm-blooded, meaning that they generate their own body heat end are thus mere tolerant of temperature extremes. Birds and mammals, because they are warm blooded, move more swiftly and have greater physical endurance than reptiles.
Scientists believe that the evidence now points to the idea that all dinosaurs were actually warm- blooded. Ironically, the particular dinosaur in which the discovery was made was a Tescelosaurus, which translates to "marvelous lizard." A lizard, of course, is a reptile.
What does the author imply by the sentence: Ironically, the particular dinosaur in which the discovery was made was a Tescelosaurus, which translates to "marvelous lizard."?
选项
A、It is paradoxical that the dinosaur’s name includes the word lizard, because now scientists believe it is not a lizard.
B、It is unusual that the creature would have a name with the suffix of a dinosaur.
C、It is surprising that the fossilized heart was discovered.
D、It should have been realized long ago that dinosaurs were warm-blooded.
答案
A
解析
A中的paradoxical“自相矛盾的”与原文中的ironically意义接近。文中的句子说明这种恐龙名字的含义 marvelous lizard与最近的发现相矛盾,因为恐龙不是lizard。
转载请注明原文地址:https://kaotiyun.com/show/juj7777K
0
大学英语四级
相关试题推荐
A、Hehasneverseenafossilthatold.B、Itisprobablyarecentspecimen.C、Itcouldbemanymillionsofyearsold.D、Hewilla
TheWorldinaGlass:SixDrinksThatChangedHistoryTomStandageurgesdrinkerstosavorthehistoryoftheirfavoritebev
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheyenteranewculture.Expertshavebeeninterestedin
Forthispart,youareallowed30minutestowriteacompositiononthetopic:ToBeaSmallFishinaBigPondoraBigFishin
A、Heisforgetful.B、Heislookingforanassistant.C、Hisclassiseasy.D、Hiscourseisdifficult.D
Forthispart,youareallowed30minutestowriteacompositiononthetopic:GraduateSchoolorWork?Youshouldwriteatleas
Betweenthetwoworldwars,seriousnovelistsandplaywrights(剧作家)werereadandappreciatedmainlybypeoplefrommiddleandup
Withtheadvancementofmedicaltechnologyandsocialwelfare,oldageis,tomanypeople,nolongeraproblem.However,therei
Unfortunatelysalesresultsoverthelastyearhavefailedtocomeuptoourexpectations.Anumberoffactorshavebeenrespons
Whetherleadersarebornormadehasbeenasubjectofintensedebatealmostsincethebeginningoftime.But,withcurrentmana
随机试题
下列关于神经递质的描述,正确的是()。
《海牙规则》生效于()
A、青霉素CB、氨苄青霉素C、红霉素D、氧氟沙星E、庆大霉素肺炎链球菌肺炎首选()
A.化疗B.放疗C.根治性手术D.化疗和根治性手术E.放疗和根治性手术骨肉瘤采用的治疗方法是
A、地高辛B、洋地黄毒苷C、米力农D、多巴酚丁胺E、毒毛花苷K通过激动β受体,加强心肌收缩力的非苷类为( )。
A.载药量B.渗漏率C.磷脂氧化指数D.释放度E.包封率在脂质体的质量要求中,表示脂质体化学稳定性的项目是()。
根据国民经济和社会发展状况,土地等级应定期调整,其调整的时间间隔是()。
()由政府土地部门采取招标、拍卖和挂牌方式转让国有土地。
一个项目具有一个项目主管,一个项目主管可管理多个项目,则实体“项目主管”与实体“项目”的联系属于【】的联系。
Theclosestrestatementof"oneindustrymaykillanotherindustry".(Sent.6,Para.1).isthat______.Whichofthefollowing
最新回复
(
0
)