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 the single, strangely spiraled tusk that first alerted scientists. Sticking out of the ice covered by Siberian soil, li
It was the single, strangely spiraled tusk that first alerted scientists. Sticking out of the ice covered by Siberian soil, li
admin
2010-07-06
90
问题
It was the single, strangely spiraled tusk that first alerted scientists. Sticking out of the ice covered by Siberian soil, like an ivory tombstone, it revealed the. presence of a true scientific wonder: underneath lay the frozen body of a mammoth.
The discovery has presented researchers with an unprecedented challenge--to move to laboratory, a mammoth’s entire, undisturbed body where it can be analyzed at leisure and its biological secrets revealed.
Last week, scientists completed the first stage of this remarkable transfer, using a helicopter to lift a twenty-three-ton block of ice and mammoth to a new site where defrosting can be started.
As one of the team, Dutch paleontologist Dick Mol put it, "It’s very exciting. I’ve been working on mammoths for more than 25 years, and this is a dream for me—to find the soft parts and touch them and even smell them."
In particular, the discovery and recovery of the 23,000-year-old body has raised speculation that it may be possible to clone a mammoth from one of its cells. Could the same process used to clone Dolly the sheep be attempted with a mammoth, using an elephant as a surrogate mother?
It is certainly an enticing prospect. Herds of woolly mammoths grazing the pastures of the world’s many natural parks would be a mighty attraction, and a massive triumph for modem science, showing it could even resurrect eradicated species. Extinction would no longer be forever.
Mammoths once roamed the world’s northern hemisphere until they abruptly disappeared. Some. scientists argue that as the last Ice Age ended, the world went through major ecological changes, and these large woolly mammals found life awkward, sweaty and unaccommodating. No longer able to compete for resources, they became extinct.
What is the main idea of the passage?
选项
A、Mammoths can talk with scientists nowadays.
B、Scientists completed mammoth clone last week.
C、Scientists made speculation of cloning mammoths.
D、We should protect mammoths for they will extinct soon.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/eSDd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Note:Whenmorethanoneanswerisrequired,thesemaybegiveninanyorder.Somechoicesmayberequiredmorethanonce.A
Whatwasthewomandoingwhenthepolicemanfoundher?
WhatdoesthespeakersayabouttheroadbetweenMaineandQuebec?
Whatisthespeakermainlydiscussing?
Whatisthespeakermainlydiscussing?
Inthepast,theParkServicefocusedonmakingthebigscenicparksmore【21】______andcomfortablefortourists.Roadswerep
Thepassengerswillhavea15-minute______stopatBloomington.
Aneweraisuponus.Callitwhatyouwill:theserviceeconomy,theinformationage,theknowledgesociety.Italltranslates
Forthispart,youareallowed30minutestowritealettertotheeditorofanewspapercomplainingaboutthepoorserviceof
WhenhediesinAprilof1983,Dr.JoelHildebrandwas101yearsold,whohadbeenmarriedforseventy-fiveyears,andhadtaugh
随机试题
电镜下肾小球基底膜增厚并出。现虫蚀状空隙的肾炎是()
A.颊部蝶形红斑B.口、眼干燥,猖獗性龋齿C.雷诺现象D.Gottron皮疹E.关节肿痛皮肌炎典型的皮疹是
中国居民企业A(所得税税率为25%)持有甲国B公司40%股权,甲国的所得税税率为10%。2018年B公司实现应纳税所得额为4000万元,在甲国缴纳企业所得税400万元。B公司决定向股东分配2500万元的税后利润,A公司分得1000万元,并按照甲国的预
根据《中华人民共和国物权法》,下列财产中,可以设定抵押的是()。
根据增值税法律制度的规定,下列服务中,免征增值税的有()。
(2017年改)甲有限责任公司(以下简称甲公司)是生产多种产品的制造企业,为增值税一般纳税人,适用的增值税税率为13%,原材料采用实际成本法核算,发出材料成本采用月末一次加权平均法计算。2020年1月1日,M材料库存数量为500千克,每千克实际成本为200
使用成本分析模式确定现金持有规模时,在最佳现金持有量下,现金的()。
在个体咨询方案的实施过程中,咨询师对求助者进行支持和鼓励,正确的包括()
SnowSnowisaformoffrozenwater./Itcontainsmanygroupsoftinyiceparticlescalledsnowcrystals./Thesecrystals
A、T-shirtsfeelsoftandwashwell.B、T-shirtsaresmartandcomfortable.C、T-shirtsgowellwithtrousers.D、T-shirtsaresuita
最新回复
(
0
)