5.As part of an effort to improve treatments for life-threatening illnesses,a team of scientists have created rabbits that glow in the dark.
Their efforts have produced two rabbits out of a litter of eight that went from being a normal,soft white to glowing green in the dark.The rabbits were born at the University of Istanbul as part of the collaboration between scientists from universities in Turkey and Hawaii.
The rabbits glow to show that a genetic operation technique can work efficiently,though the specific color is more cosmetic than scientific."The green is not important at all-it's just a marker to show the experiment can be done successfully,"said University of Hawaii associate professor,Stefan Moisyadi.
To produce the glowing effect,researchers injected jellyfish(水母)DNA into a mother rabbit's embryos.Then those embryos were inserted back into the mother.Similar experiments have resulted in glowing cockroaches(蟑螂)and cats.
Eventually,the researchers hope the technique can lead to new ways to produce medicines,Moisyadi said.
"The final goal is to develop animals that are able to produce beneficial molecules(分子)in their milk that can be cheaply extracted(提取),especially in countries that cannot afford big factories that make drugs,which usually cost US $1 bn to build.Then they will be able to produce their own protein-based medication in animals,"Moisyadi said.
The rabbits are expected to have the same life span as their non-glowing counterparts,but Moisyadi said he understands people can object to this kind of experimentation involving live animals.
"To the people against,I say:think about,what are the benefits and what are the injuries?"Moisyadi said."And if the benefits outweigh the injuries,let's go with the benefits."
Moisyadi,a native of Turkey who is now with the University of Hawaii,started developing the project in 2006,and researchers are now waiting to see if pregnant sheep produce similar results.
31.What do we know about the glowing rabbits?D
A.They live shorter lives than ordinary rabbits.
B.Their fur became green after the experiment.
C.They were chosen from a special species of rabbits.
D.The color that they glow isn't of interest to scientist.
32.Why did scientists conduct the experiment to create glowing rabbits?C
A.To research animal genes.
B.To improve animal species.
C.To produce cheap,beneficial medicine.
D.To improve animal's ability to resist disease.
33.Which animal wasn't used as the test subject?C
A.The cat.B.The jellyfish.C.The sheep.D.The cockroach.
34.Which of the following is TRUE,according to the passage?C
A.The project is supported by people.
B.The success rate in creating the rabbits is 20%.
C.The project has been conducted for more than nine years.
D.The project is mainly conducted by Turkish scientists.
35.What is Moisyadi's attitude towards such experimentation?B
A.Doubtful.B.Supportive.C.Disapproving.D.Indifferent.
分析 一只发光的兔子听起来就像来自迷幻歌曲中的一种生物,但是夏威夷大学马诺阿分校的遗传学家Ryuzo Yanagimachi和Stefan Moisyadi与土耳其伊斯坦布尔大学的研究人员合作,成功培育出了一只真正的荧光兔子.科学家们想利用这个技术来研究药物.
解答 31.D,推理判断题,根据Stefan Moisyadi说的话The green is not important at all-it's just a marker to show the experiment can be done successfully可知,科学家对兔子发出的绿色不感兴趣,故答案为D.
32.C,推理判断题,根据句子The final goal is to develop animals that are able to produce beneficial molecules(分子)in their milk that can be cheaply extracted(提取),especially in countries that cannot afford big factories that make drugs,which usually cost US $1 bn to build.Then they will be able to produce their own protein-based medication in animals可知,科学家做这个实验是为了提取出有效的便宜的药物,故答案为C.
33.C,细节理解题,根据句子To produce the glowing effect,researchers injected jellyfish(水母)DNA into a mother rabbit's embryos.Then those embryos were inserted back into the mother.Similar experiments have resulted in glowing cockroaches(蟑螂)and cats.可知,绵羊没有作为研究对象,故答案为C.
34.C,细节理解题,根据句子Moisyadi,a native of Turkey who is now with the University of Hawaii,started developing the project in 2006,and researchers are now waiting to see if pregnant sheep produce similar results可知,这个项目已经实施超过九年了,故答案为C.
35.B,推理判断题,根据句子And if the benefits outweigh the injuries,let's go with the benefits可知,Moisyadi认为如果好处大于坏处,就往好的方面看,可见他是支持的,故答案为B.
点评 解答任务型阅读理解题,首先对原文材料迅速浏览,掌握全文的主旨大意.因为阅读理解题一般没有标题,所以,速读全文,抓住中心主旨很有必要,在速读的过程中,应尽可能多地捕获信息材料.其次,细读题材,各个击破.掌握全文的大意之后,细细阅读每篇材料后的问题,弄清每题要求后,带着问题,再回到原文中去寻找、捕获有关信息.最后,要善于抓住每段的主题句,阅读时,要有较强的针对性.对于捕获到的信息,要做认真分析,仔细推敲,理解透彻,只有这样,针对题目要求,才能做到稳、准.