decades or centuries.Researchers have had the idea of bringing back the Tasmanian tiger，which went extinct in 1936.There are，however，other species that have been seriously suggested for cloning，such as the giant panda，the African bongo antelope，the Sumatran tiger and the pygmy hippo.Supporters believe cloning provides hope of keeping these endangered animals alive before they die out.

　　语篇解读　科学家通过冻结的DNA成功地克隆了一只比利牛斯野生山羊。这种野生山羊在2000年就已经灭绝了。

　　1. What do we know about the cloned ibex?

　　A．It died of lung disease.

　　B．It was the first cloned animal in the world.

　　C．It lived for thirteen years.

　　D．It was born in 2000.

　　解析：　细节理解题。根据第二段the newborn cloned kid died after seven minutes as a result of lung disease可知，这只克隆羊死于肺病。

　　答案：　A

　　2．We can conclude from the passage that________.

　　A．cloning has developed quickly in developed countries

　　B．no more animals will die out in the future

　　C．cloning makes it possible to preserve endangered species

　　D．cloning seldom results in physical problems for animals

　　解析：　推理判断题。根据最后一段Supporters believe cloning provides hope of keeping these endangered animals alive before they die out.可以推断，运用克隆技术来挽救濒危动物是有希望的。

　　答案：　C

　　3．What's the best title for this passage?

　　A．Great advancement in cloning goats

　　B．Difficulties in saving extinct animals

　　 C．Public concerns about cloning

　　D．Cloning brought back an extinct species for a while

　　解析：　主旨大意题。通读全文，可知科学家们克隆了一只已经灭绝的比利牛斯野生山羊，但这只羊在出生不久就死了，故D项最适合作文章标题。

答案：　D