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。,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 一只發(fā)光的兔子聽起來就像來自迷幻歌曲中的一種生物,但是夏威夷大學馬諾阿分校的遺傳學家Ryuzo Yanagimachi和Stefan Moisyadi與土耳其伊斯坦布爾大學的研究人員合作,成功培育出了一只真正的熒光兔子.科學家們想利用這個技術(shù)來研究藥物.
解答 31.D,推理判斷題,根據(jù)Stefan Moisyadi說的話The green is not important at all-it's just a marker to show the experiment can be done successfully可知,科學家對兔子發(fā)出的綠色不感興趣,故答案為D.
32.C,推理判斷題,根據(jù)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。,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,科學家做這個實驗是為了提取出有效的便宜的藥物,故答案為C.
33.C,細節(jié)理解題,根據(jù)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,綿羊沒有作為研究對象,故答案為C.
34.C,細節(jié)理解題,根據(jù)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,這個項目已經(jīng)實施超過九年了,故答案為C.
35.B,推理判斷題,根據(jù)句子And if the benefits outweigh the injuries,let's go with the benefits可知,Moisyadi認為如果好處大于壞處,就往好的方面看,可見他是支持的,故答案為B.
點評 解答任務型閱讀理解題,首先對原文材料迅速瀏覽,掌握全文的主旨大意.因為閱讀理解題一般沒有標題,所以,速讀全文,抓住中心主旨很有必要,在速讀的過程中,應盡可能多地捕獲信息材料.其次,細讀題材,各個擊破.掌握全文的大意之后,細細閱讀每篇材料后的問題,弄清每題要求后,帶著問題,再回到原文中去尋找、捕獲有關(guān)信息.最后,要善于抓住每段的主題句,閱讀時,要有較強的針對性.對于捕獲到的信息,要做認真分析,仔細推敲,理解透徹,只有這樣,針對題目要求,才能做到穩(wěn)、準.