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
Which is NOT correct description about Medullary bone?
Which is NOT correct description about Medullary bone?
admin
2010-01-06
39
问题
Which is NOT correct description about Medullary bone?
Scientists have discovered evidence that a dinosaur found in Montana was a female. Scientists have never before been able to reliably determine the sex of fossilized dinosaurs. The latest discovery gives them a tool to identify at least some females. What they found was a layer of something called medullary bone inside the thighbone of a dinosaur dug up five years ago. Scientists had cut the bone into two pieces to get it into a helicopter. Medullary bone is only known in ovulating birds, it’s a source of calcium that birds draw to make shells for their eggs. Writing in the journal Science, the scientific team believes the bone layer could be a way to identify other female dinosaurs but only if they died while making eggs and were then fossilized. They point out that the discovery confirms the view that modem birds are the closest living relatives of the two-legged dinosaurs.
选项
A、Modem birds are the closest living relatives of the two-legged dinosaurs.
B、Dinosaurs have medullary bone.
C、Medullary bone is only known in ovulating birds.
D、Medullary bone is a source of calcium for birds to make shells for their eggs.
答案
A
解析
本题考查对新闻细节的捕捉。根据文中原文"What they found was a layer of something called medullary bone inside the thighbone of a dinosaur dug up five years ago.”可知科学家们在恐龙化石中发现了一层脊髓骨。接着说明只在产卵的鸟类中发现过这种物质,选项A正确。另外说明脊髓骨是鸟类吸取形成鸟壳的钙质的主要来源。由此可知,脊髓骨中必定富含钙质,选项B、 C均正确。因此只有选项D的说法不正确,为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/My6K777K
0
专业英语四级
相关试题推荐
TheroleofeyecontactinaconversationalexchangebetweentwoAmericansiswelldefined;speakersmakeacontactwiththeey
ThingstobeTaughtinEverySchoolI.Introduction:Importanceofstudents’abilitytodealwiththerealworld.A.Speaker
FiveVirtuesofStyleI.Correctness—Followcorrectusageofwords,grammarand【T1】______rules—Reasons
FiveVirtuesofStyleI.Correctness—Followcorrectusageofwords,grammarand【T1】______rules—Reasons
Whywasthewomanworried?
Whywasthewomanworried?
Whywasthewomanworried?
WhyisSarahworried?
Hehadalwayskepta______eyeonwhatwashappeningaroundhim.
随机试题
给定程序中函数fun的功能是:将一个由八进制数字字符组成的字符串转换为与其值相等的十进制整数。规定输入的字符串最多只能包含5位八进制数字字符。例如,若输入:77777,则输出将是:32767。请改正程序中的错误,使它能得到正确结果。
A.正视眼B.近视眼C.远视眼D.老视眼E.散光6m以外的物体正好聚焦在视网膜上
可以增强磺脲类药物降血糖效应的药物包括
袋内壁刮治术一般适用于
在7~9层的中高层住宅中,一梯两户的板式住宅与塔式(点式)住宅相比.以下哪一条不是它的优点?
桥梁的五大部件包括()。
甲、乙签订融资租赁合同,甲为出租人,乙为承租人。甲根据乙的选择,向丙购买了1台大型设备,出租给乙使用。乙在该设备安装完毕后,发现不能正常运行。根据合同法律制度的规定,下列表述中,正确的是()。
为了了解高校学生对《知识产权法》基本知识的掌握程度,某教育咨询公司在一所高校内部选取了相同年级的两组学生进行了有奖测试。经阅卷分析发现:第一组学生的优秀率达到了60%,而第二组的优秀率只有20%。咨询公司据此得出结论:该校大学生在对《知识产权法》的了解和掌
MedicalJournalsMedicaljournalsarepublicationsthatreportmedicalinformationtophysiciansandotherhealthprofession
Wouldn’titbegreatifyoucouldjustlookupattheskyandreadtheweatherforecastrightaway?Well,youcan.Theforecast
最新回复
(
0
)