题目内容
4.Is a mouse that can speak acceptable?How about a dog with human hands or feet?Scientists,the people with the know-how to make such things happen,are now thinking about whether such experiments are morally right or not.On Nov.10,Britain's Academy of Medical Sciences launched a study on the use of animals with human materials in scientific research.The work is expected to take at least a year,but its leaders hope it will lead to guidelines for scientists in Britain and around the world on how far they can go mixing human genes into animals in search of ways to fight human diseases.
"Do these constructs (构想) challenge our idea of what it is to be human?"asked Martin Bobrow,a professor of medical genetics at Cambridge University and chair of a 14-member group looking into the issue."It is important that we consider these questions now so that appropriate boundaries are recognized."
Using human material in animals is not new.Scientists have already created monkeys that have a human form of the Huntingdon's gene so they can study how the disease develops; and mice with livers (肝) made from human cells are being used to study the effects of new drugs.
However,scientists say the technology to put ever greater amounts of human genetic material into animals is spreading quickly around the world---raising the possibility that some scientists in some places may want to go further than is morally acceptable.
Last year in Britain there was a lively debate over new laws allowing the creation of human-animal embryos (胚胎) for experiments.On one side of the debate were religious groups,who claimed that such science interferes with nature.Opposing them were scientists who pointed out that such experiments were vital to research cures for diseases.
The experts will publish reports after the end of the study,in which they will give definitions (定义) for animal embryos with human genes or cells,look at safety and animal welfare issues,and consider the right legal framework to work within.
72.What does the underlined word"they"in Paragraph 2 refer to?A
A.Scientists in Britain and around the world.
B.Leaders of the research.
C.Guidelines for scientists.
D.Scientific experiments.
73.Scientists do research of mixing human genes into animals in order toB
A.test new drugs on animals
B.to find ways to fight human diseases
C.prove the research is morally acceptable
D.create monkeys and mice with livers made from human cells
74.We can infer from the passage thatC
A.the experts will release reports after the study
B.scientists have never doubted the use of animals with human materials
C.the creation of human-animal embryos for experiments is legal in Britain
D.religious groups hold that cures for diseases have to be done through experiments
75.What would be the best title of the passage?A
A.Morally right or not?
B.A debate about new laws
C.Cures for diseases
D.Animal embryos with human genes.
分析 本文是一篇科教类阅读,文章主要讲的是人们正在讨论将人与动物的基因混合是否符合伦理.
解答 72-75.ABCA
72题答案:A考查细节推理,根据原文第二段but its leaders hope it will lead to guidelines for scientists in Britain and around the world on how far they can go mixing human genes into animals in search of ways to fight human diseases.但是该研究的领导者们希望它(研究)能为英国及全世界的科学家在他们混合人类基因与动物基因从而找到抵抗人类疾病的道路上能走多远提供引导.可知they指的是前面的scientists in Britain and around the world,故本题答案为A选项.
73题答案:B考查细节推理,根据原文第二段的 how far they can go mixing human genes into animals in search of ways to fight human diseases.在混合人类基因与动物基因以希望找到抵抗人类疾病的道路上他们能走多远.可知本题答案为B选项.
74题答案:C考查细节推理,根据文章最后一段Last year in Britain there was a lively debate over new laws allowing the creation of human-animal embryos (胚胎) for experiments.去年在英国有一场就新法律允许"人与动物胚胎的制作用于试验合法化"的激烈辩论.可知本题答案为C选项.
75题答案:A考查主旨大意,文章主要讲的是人们正在讨论将人与动物的基因混合是否符合伦理,故本题答案为A选项.
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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