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【单选题】
CThe aim of "Noah’s Ark" project is to （）.
A．implant embryo into a host animal
B．salute the Chinese efforts in saving pandas
C．save enered animals from extinction
D．introduce cells from a dead female panda into the egg ceils of a Japanese white rabbit
B．salute the Chinese efforts in saving pandas
C．save enered animals from extinction
D．introduce cells from a dead female panda into the egg ceils of a Japanese white rabbit
A.
C
B.
With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save the enered 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".
C.
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, says 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. "
D.
Noah’s Ark is aimed at collecting eggs, embryos, semen(精子) and DNA of enered 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.
E.
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 er of becoming extinct in the next 25 years.
F.
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.
G.
The entire procedure could take from three to five years to complete.
H.
"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 take s 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.
I.
"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. \
J.
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【单选题】（9）处应填（）。 A．会话 B．传输 C．数据链路 D．网络
A.
(8) 协议对在网络中传送的数据进行分组和路由，负责将数据从一个节点传送到另一个节点，该协议与OSI/RM模型中的 (9) 层对应，同层协议还包括 (10) 。
【单选题】（56）处应填（）。 A．150万元 B．50万元 C．-150万元 D．-50万元
A.
某项目计划成本为400万元，计划工期为4年，项目进行到两年时，监理发现预算成本为200万元，实际成本为100万元，挣值为50万元，则项目成本差异为 (55) ，项目进度差异为 (56) 。
【单选题】根据统计，从1998年到2006年，世界上多数国家培养的博士正在呈现逐年增多的趋势，博士的产出就像某些工业产品，如汽车、电脑和电视，年年攀升。世界上博士产量年增长率占前三甲的是两个发展中国家和一个发达国家。第一位是中国，年增长率为40%，每年已达到近5万人；其次是墨西哥，年增长率为17.1%；增长率占第三的是丹麦，为10%。但是，在博士产量大增的情况下，也有极少数的国家并没有随大流。例如，德国是博...
A.
许多国家的博士培养已经产业化
B.
博士数量的增长是全球的总体趋势
C.
博士的培养不能单纯地追求数量的增长
D.
发展中国家比发达国家的博士数量增长快
【单选题】（55）处应填（）。 A．150万元 B．-50万元 C．-150万元 D．50万元
A.
某项目计划成本为400万元，计划工期为4年，项目进行到两年时，监理发现预算成本为200万元，实际成本为100万元，挣值为50万元，则项目成本差异为 (55) ，项目进度差异为 (56) 。
【单选题】EWhat does the author believe as important in life（） A．To own a farm. B．To satisfy his needs. C．To be free from worries. D．To live in the countrysid
A.
E
B.
At a certain time in our lives we consider every place as the possible site(地点) for a house. I have thus searched the country within a dozen miles of where I live. In imagination Ihave bought all the farms, one after another, and I knew their prices.
C.
The nearest thing that I came to actual ownership was when I bought the Hollowell place. But before the owner completed the sale with me, his wife changed her mind and wished to keep it, and he offered me additional dollars to return the farm to him. However, I let him keep the additional dollars and sold him the farm for just what I had given for it.
D.
The real attractions of the Hollowell farm to me were its position, being about two miles from the village, half a mile from the nearest neighbor, bounded(相邻) on one side by the river, and separated from the highway by a wide field. The poor condition of the house and fences showed that it hadn’t been used for some time. I remembered from my earliest trip up the river that the house used to be hidden behind a forest area, and I was in a hurry to buy it before the owner finished getting out some rocks, cutting down the apple trees, and clearing away some young trees which had grown up in the fields. I wanted to buy it before he made any more of his improvements. But it turned out as I have said.
E.
I was not really troubled by the loss. I had always had a garden,but I don’t think I was ready for a large farm. I believe that as long as possible it is better to live free and uncommitted(不受约束的). It makes but little difference whether you own a farm or not.
F.
【单选题】（29）处应填（）。 A．外部实体 B．处理过程 C．数据结构 D．数据流
A.
数据流程图(DFD)是一种能全面地描述信息系统逻辑模型的主要工具，在数据流程图中方框表示 (28) ， (29) 不属于数据流程图的基本成分。