“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.”

　　语篇解读：本文是一篇科普说明文。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。

　　1．What is the passage mainly about?

　　A．The importance of genetic engineering.

　　B．Ways to improve mothers' milk.

　　C．A cloned cow to produce human­like milk.

　　D．Advanced agricultural technology in Argentina.

　　解析：选C　主旨大意题。根据文章第一段可知，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。故选C项。

　　2．Which of the following can best replace “more closely resemble” in Paragraph 4?

　　A．have more varieties than

　　B．be more similar to

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