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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, semens (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 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______.
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
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A.
通知行
B.
议付行
C.
开证申请人
D.
开证银行
【多选题】下列体现了《旅游法》的规范功能的有( )。
A.
明确旅游经营者资质、从业人员资质及经营规则
B.
对旅游服务合同进行专门规定
C.
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D.
对旅游发展规划、统筹旅游资源保护和开发进行了规定
E.
单设“旅游者”一章
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A.
基准面
B.
平面
C.
基面
D.
辅助平面
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A.
正确
B.
错误
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A.
供应物流
B.
销售物流
C.
生产物流
D.
回收物流
E.
废弃物物流
F.
CDE
G.
按照企业物流的垂直结构,属于管理层的内容( )有
H.
发货与进货运输
I.
物流系统战略规划
J.
库存计划与控制 K. 系统控制 L. 成绩评定
【单选题】—I usually have milk and bread for breakfast. —_____.
A.
So do I
B.
So have I
C.
So I do
D.
So I have
【单选题】护士为颅内高压的患者输注20%甘露醇250ml,估计静脉滴注需要的时间是
A.
5~10分钟
B.
15~30分钟
C.
31~45分钟
D.
40~50分钟
E.
61~80分钟
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