题目内容
17.Scientists in Argentina have created the world's first cow with two human genes that will enable it to produce human-like milk.Genetic engineering was used to introduce the"mothers'milk"genes into the animal before birth,according to the National Institute of Agribusiness Technology in Buenos Aires.
As an adult,the cloned cow"will produce milk that is similar to that of humans",which will prove"a development of great importance for the nutrition of infants(婴儿)",said the institute."The cloned cow,named Rosita ISA,is the first in the world with two human genes that contain the proteins present in human milk,"said the statement.
In April,scientists in China published details of research showing that they had created dairy cows which produced milk containing proteins found in human breast milk.But the Argentine team said the Chinese only introduced one human gene,while their research involved two,meaning the milk will more_closely_resemble that of humans.
"Our goal was to raise the nutrition value of cows'milk by adding two human genes,which do good to the immune system of infants,"said Adrian Mutto,from the National University of San Martin which worked with the institute.
Cristina Kirchner,President of Argentina,said the scientific institute made all Argentines proud.She also said that she had rejected the"honor"of having the cow named after her."They came to tell me that the name is Cristina,but what woman would like to have a cow named after her?It appeared to me to be more proper to call it Rosita."
25.What is the passage mainly about?C
A.The importance of genetic engineering.
B.Ways to improve mothers'milk.
C.A cloned cow to produce human-like milk.
D.Advanced agricultural technology in Argentina.
26.Which of the following can best replace"more closely resemble"in Paragraph 4?B
A.have more varieties than
B.be more similar to
C.have more nutrition than
D.be more different from
27.What can be inferred from Cristina Kirchner's statements?A
A.She was quite satisfied with the research done by the institute.
B.She considered it an honor to name the special cow.
C.She felt it improper to be named after the cow.
D.She refused to give a name to the cow out of self-respect.
分析 阿根廷国家农业综合科技研究所的科学家们日前宣布,他们已成功培育出一头能够产类似人奶的奶牛.
解答 25-27.CBA
25答案:C主旨大意题.根据文章第一段"Scientists in Argentina have created the world's first cow with two human genes that will enable it to produce human-like milk"阿根廷的科学家们已成功培育出一头能够产类似人奶的奶牛.故本题答案为C选项.
26题答案:B词义猜测题.根据第四段的第二句But the Argentine team said the Chinese only introduced one human gene,while their research involved two,meaning the milk will more_closely_resemble that of humans.阿根廷的研究组称中国研究组仅放入了一个人类基因,而他们的研究包含了两个,这意味着产出的牛奶将和人奶更相似.故选B项.
27题答案:A推理判断题.根据最后一段的…made all Argentines proud"使所有的阿根廷人自豪".可推知,她对这个研究感到非常满意.故选A项.
点评 本文是一篇科教类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.
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