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【单选题】

EThe underlined words "the loss" in the last paragraph refer to ().

A.the money the author lost in buying the farm
B.the sale of the garden in the Hollowell place
C.the removal of the trees around the house
D.the failure to possess the Hollowell place

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.
 
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【单选题】(28)处应填()。 A.数据流 B.数据的源点或终点 C.数据存储 D.加工

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。

【单选题】A.在List2中插入了“外语”、“物理”两项 B.在List1中删除了“外语”、“物理”两项 C.同时产生A)和B)的结果 D.把List1中最后1个列表项删除并插入到List2中

A.
窗体上有List1、List2两个列表框,List1中有若干列表项(见图),并有下面的程序:
B.
Private sub Command1_Click()
C.
For k=List1.ListCoum-1 To 0 step-1
D.
If List1.Selected(k) Then
E.
List2.AddItem List1.List(k)
F.
List1.RemoveItem k
G.
End If
H.
Next k
I.
End Sub
J.
程序运行时,按照图示在List1中选中2个列表项,然后单击Command1命令按钮,则产生的结果是()

【单选题】(36)处应填()。 A.2h B.2h-1 C.2h -1 D.2h-1+1

A.
满二叉树的特点是每层上的结点数都达到最大值,因此对于高度为h(h>1)的满二叉树,其结点总数为 (36) 。对非空满二叉树,由根结点开始,按照先根后子树、先左子树后右子树的次序,从1、2、3、…依次编号,则对于树中编号为i的非叶子结点,其右子树的编号为 (37) (高度为3的满二叉树如下图所示)。
B.

【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 endangered animals from extinction D.introduce cells from a dead fem...

A.
C
B.
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".
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 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.
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 danger 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.
 

【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】(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)