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
With only about 1 000 pandas left in the world. China is desperately trying to clone the animal and save the endangered species.
With only about 1 000 pandas left in the world. China is desperately trying to clone the animal and save the endangered species.
admin
2012-07-17
28
问题
With only about 1 000 pandas left in the world. China is desperately trying to clone the animal and save the endangered species. That’s a move similar to what a Texas A&M University researcher has been undertaking for the past five years in a project called "Noah’s Ark".
Dr. Duane Kraemer, a professor in Texas A&M’s College of Veterinary Medicine and a pioneer in embryo (胚胎) transfer work and related procedures, said he salutes the Chinese effort and "I wish them all the best success possible. It’s a worthwhile project, certainly not an easy one, and it’s very much like what we’re attempting here at Texas A&M—to save animals from extinction. "
Noah’s Ark is aimed at collecting eggs, embryos, semen (精子) and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Kraemer says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2 000 species of mammals, birds and reptiles (爬行动物) will become extinct over the next 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
"The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a major problem," Kraemer believes. "They will probably have to do several hundred transfers to result in one pregnancy. It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort," adds Kraemer, who is one of the leaders of the Missyplicity Project at Texas A&M, the first-ever attempt at cloning a dog.
"They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly applaud their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed. "
The best title for the passage may be______.
选项
A、China’s Efforts to Clone Pandas
B、China—the Native Place of Pandas Forever
C、Exploring the Possibility to Clone Pandas
D、China’s First Cloned Panda
答案
A
解析
本题问本文的最佳标题是什么。通读全文,我们知道本文主要介绍了美国科学家对中国科学家克隆大熊猫的做法的评价,并与美国科学家正在从事的“诺亚方舟”项目作了对比。最后一段鲜明地表达了他们对中国同行所做的工作的高度评价。因此,本题的正确答案应是A“中国为克隆大熊猫所做的努力”。
转载请注明原文地址:https://kaotiyun.com/show/YIXO777K
0
在职攻硕英语联考
相关试题推荐
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
Noneofthestudentsintheclasslikesthemistress,whoisusedtobeing______ofeverythingtheydo.
Theamazingsuccessofhumansasa【C1】______istheresultoftheevolutionarydevelopmentofourbrainswhichhasled,amongoth
Shouldwecareifover150knownspeciesofanimalshave【C1】______fromtheearthinthelastfiftyyears?Shouldwebeconcerned
Shouldwecareifover150knownspeciesofanimalshave【C1】______fromtheearthinthelastfiftyyears?Shouldwebeconcerned
Althoughmostdreamsapparentlyhappen______,dreamactivitymaybeprovokedbyexternalinfluences.
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
InsomeCaliforniahousingestates,akeyaloneisinsufficienttogetsomeoneinthedoor;hisorhervoiceprintmustalsobe__
Inthatcountrythecoinsareso______thatonehastocarrygreatquantitiestomakeasinglepurchase.
随机试题
临房早泄,腰酸耳鸣,心烦失眠,脉细数,为( )临房早泄,神疲乏力,夜尿频多,舌淡脉虚,为( )
A.溶解吸收B.溃疡形成C.空洞形成D.机化E.钙化坏死累及皮肤和皮下脂肪引起
男性,62岁。慢性咳嗽、咳痰近20年,伴气急渐进性加重,平地行走稍快即感气急。临床诊断慢性支气管炎、阻塞性肺气肿。关于后者的诊断下列哪项体征不是必须的
把燃煤锅炉作为污染源分析,通常设定的污染因子为()。
根据《建设工程安全生产管理条例》的规定,下列说法正确的是()。
保险车辆(含投保的挂车)全车被盗用,被抢劫,被抢夺,经县级以上公安刑侦部门立案证实,满()未查明下落,要负全车盗抢险的保险责任
单位建筑工程概算的主要编制方法有( )。
下列关于汇率的说法,错误的是()。
案例:薛老师喜欢旅游。有一次她想旅游,又没有到放假时间,于是,她就到熟人医生那开了一张假证明,请病假一个月去欧洲旅游。因为薛老师没上班,班级工作都落在了配班老师身上。幼儿园到处招聘代课老师,好几天也没找到合适的,园长只好亲自带班,但却因此影响了正常的管理
在结构化程序设计中,模块划分的原则是
最新回复
(
0
)