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
2014-04-23
95
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 aim of "Noah’s Ark" project is to______.
选项
A、salute the Chinese efforts in saving pandas
B、implant embryo into a host animal
C、introduce cells from a dead female panda into the egg cells of a Japanese white rabbit
D、save endangered animals from extinction
答案
D
解析
本题是一道具体细节题。问“挪亚方舟”项目的目的是什么。利用查阅式阅读法,我们发现文章第三段指出,“挪亚方舟”项目的目的是收集濒临灭绝的动物的卵子、胚胎、精子和DNA,用液体氮把它们储存起来。万一某些物种灭绝了,将会有足够的基础建造材料(指储存的动物的卵子、胚胎、精子和DNA)再造这些物种。文章的最后一段第二句再次提到了这个项目的目的,即拯救濒临灭绝的物种。因此,本题的正确答案应是D。A“向中国拯救大熊猫的努力致意”,B“将胚胎植于寄主动物体内”,C“从死亡的雌性大熊猫身上提取细胞,移植于日本白兔的卵细胞内”,这三个选项所叙述的内容均不是该项目的目的,因此都是错误选项。
转载请注明原文地址:https://kaotiyun.com/show/g9WO777K
0
在职攻硕英语联考
相关试题推荐
WearesorrytosaythatMaryisnottheverypersonwhocanbe______witheithermoneyorsecretinformation.
RichardSatava,programmanagerforadvancedmedicaltechnologies,hasbeenadrivingforcebringingvirtualrealitytomedicine
RichardSatava,programmanagerforadvancedmedicaltechnologies,hasbeenadrivingforcebringingvirtualrealitytomedicine
Thesenatorwasmadetodigresstimeandagainfromthemainpointofhisspeechbecauseofthered______constantly______byhis
Becauseofarecentobstacleinproduction,saleshavedroppedandaccordinglyprofitshave______.
Inproportionasthe_________betweenclasseswithinthenationdisappearsthehostilityofonenationtoanotherwillcometoa
Themostimportantaspectofmaintainingahealthydietiswhetheryoucansticktoit.
Theprincipaldifferencebetweensingingandspeakingisthatinsingingvowelsoundsaresustainedandgivenaprecisepitch.
Ourtelephonehasbeen______forthreeweeks.
Forthepurposeofmakingweathermaps,informationwillbesentto______.
随机试题
入汤剂宜后下的药物是()
下列关于采空区移动盆地的说法中()是错误的。
由行业标准化团体或机构通过并发布的标准,主要是在某行业的范围内统一实施,成为()。
1882年,交易所允许以()方式免除履约责任,这更加促进了投机者的加入,使期货市场流动性加大。
某医生用同一支体温计连续测了甲、乙、丙三人的体温,期间没有将水银甩回玻璃泡内,结果三人的体温都是38.6℃,则三人的体温都是38.6℃。()
专家型教师相对于新手型教师在解决问题过程中的优势主要在于()。
邮箱:注册:邮件
Ridingabikeisgoodexerciseandgreatfun.Butwhatdoyoudowithabikeafteryououtgrowit?NicoleBasil,12,hasaterri
Pentium微处理器的运算器中,不仅包含整数运算部件,而且还包含______运算部件。
______drewthedailylifeofupperclasses?______waspinnedupondoors,wallsandwindows?
最新回复
(
0
)