大学职业搜题刷题APP
下载APP
首页
课程
题库模板
Word题库模板
Excel题库模板
PDF题库模板
医考护考模板
答案在末尾模板
答案分章节末尾模板
题库创建教程
创建题库
登录
logo - 刷刷题
创建自己的小题库
搜索
【单选题】

CThe best title for the passage may be ().

A.China--the Native Place of Pandas Forever
B.China’s Efforts to Clone Pandas
C.China’s First Cloned Panda
D.Exploring the Possibility to Clone Pandas

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.
 
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
收藏 - 刷刷题收藏
举报
参考答案:
举一反三

【单选题】()是一种最常用的结构化分析工具,它从数据传递和加工的角度,以图形的方式刻画系统内数据的运行情况。 A.数据流图 B.数据字典 C.ER图 D.判定表

A.
()是一种最常用的结构化分析工具,它从数据传递和加工的角度,以图形的方式刻画系统内数据的运行情况。通常使用()作为该工具的补充说明。

【单选题】首选DNS服务器应设置为() A.210.110.112.113 B.210.110.112.111 C.210.110.112.98 D.210.110.112.9

A.
某网络结构如下图所示。在Windows操作系统中配置Web服务器应安装的软件是()。在配置网络属性时PC1的“默认网关”应该设置为(),首选DNS服务器应设置为()。

【单选题】(9)处应填()。 A.media player B.multiple parts C.music player D.MPEG-1 Audio

A.
MP3是目前最流行的数字音乐压缩编码格式之一,其命名中“MP”是指 (9) ,“3”是指 (10)

【单选题】A.把For k=3 To n改为For k=1 To n B.把n=20000改为n=20000000 C.把For k=3 To n改为For k=3 To n Step2 D.把PI=1改为PI=0

A.
计算霄的近似值的一个公式是。某人编写下面的程序用此公式计算并输出π的近似值:
B.
Private Sub Command1_Click()
C.
PI=1
D.
Sign=1
E.
n=20000
F.
For k=3 To n
G.
sign=-sign
H.
PI=PI+sign/k
I.
Next k
J.
Print PI*4
.
End sub
K.
运行后发现结果为3.22751,显然,程序需要修改。下面修改方案中正确的是()

【单选题】一个进程状态转换会引起另一个进程状态转换的是() A.1→2 B.2→1 C.3→2 D.2→4

A.
某系统的进程状态转换如下图所示,图中1、2、3和4分别表示引起状态转换时的不同原因,原因4表示();一个进程状态转换会引起另一个进程状态转换的是()。
相关题目:
【单选题】()是一种最常用的结构化分析工具,它从数据传递和加工的角度,以图形的方式刻画系统内数据的运行情况。 A.数据流图 B.数据字典 C.ER图 D.判定表
A.
()是一种最常用的结构化分析工具,它从数据传递和加工的角度,以图形的方式刻画系统内数据的运行情况。通常使用()作为该工具的补充说明。
【单选题】首选DNS服务器应设置为() A.210.110.112.113 B.210.110.112.111 C.210.110.112.98 D.210.110.112.9
A.
某网络结构如下图所示。在Windows操作系统中配置Web服务器应安装的软件是()。在配置网络属性时PC1的“默认网关”应该设置为(),首选DNS服务器应设置为()。
【单选题】(9)处应填()。 A.media player B.multiple parts C.music player D.MPEG-1 Audio
A.
MP3是目前最流行的数字音乐压缩编码格式之一,其命名中“MP”是指 (9) ,“3”是指 (10)
【单选题】A.把For k=3 To n改为For k=1 To n B.把n=20000改为n=20000000 C.把For k=3 To n改为For k=3 To n Step2 D.把PI=1改为PI=0
A.
计算霄的近似值的一个公式是。某人编写下面的程序用此公式计算并输出π的近似值:
B.
Private Sub Command1_Click()
C.
PI=1
D.
Sign=1
E.
n=20000
F.
For k=3 To n
G.
sign=-sign
H.
PI=PI+sign/k
I.
Next k
J.
Print PI*4
.
End sub
K.
运行后发现结果为3.22751,显然,程序需要修改。下面修改方案中正确的是()
【单选题】一个进程状态转换会引起另一个进程状态转换的是() A.1→2 B.2→1 C.3→2 D.2→4
A.
某系统的进程状态转换如下图所示,图中1、2、3和4分别表示引起状态转换时的不同原因,原因4表示();一个进程状态转换会引起另一个进程状态转换的是()。
刷刷题-刷题-导入试题 - 刷刷题
参考解析:
AI解析
重新生成
题目纠错 0
发布
刷刷题-刷题-导入试题 - 刷刷题刷刷题-刷题-导入试题 - 刷刷题刷刷题-刷题-导入试题 - 刷刷题
刷刷题-刷题-导入试题 - 刷刷题
刷刷题-刷题-导入试题 - 刷刷题
刷刷题-单词鸭