《2022年考博英语-吉林大学考前模拟强化练习题27（附答案详解）》由会员分享，可在线阅读，更多相关《2022年考博英语-吉林大学考前模拟强化练习题27（附答案详解）（19页珍藏版）》请在金锄头文库上搜索。
1、2022年考博英语-吉林大学考前模拟强化练习题（附答案详解）1. 单选题The recent news of the successful cloning of an adult sheep in which the sheeps DNA was inserted into an unfertilized sheep egg to produce a lamb with identical DNA has generated an outpouring of ethical concerns. These concerns are not about Dolly, the now famous
2、 sheep, nor even about the considerable impact cloning may have on the animal breeding industry, but rather about the possibility of cloning humans. For the most part, however, the ethical concerns being raised are exaggerated and misplaced, because they are based on erroneous views about what genes
3、 are and what they can do. The danger, therefore, lies not in the power of the technology, but in the misunderstanding of its significance.Producing a clone of a human being would not amount to creating a “ carbon copy ” an automaton of the sort familiar from science fiction. It would be more like p
4、roducing a delayed identical twin. And just as identical twins are two separate people biologically, psychologically, morally and legally, though not genetically so to embrace a belief in genetic determinism the view that genes determine everything about us, and that environmental factors or the ran
5、dom events in human development are utterly insignificant. The overwhelming consensus among geneticists is that genetic determinism is false.As geneticists have come to understand the ways in which genes operate, they have also become aware of the myriad ways in which the environment affects their “
6、expression”. The genetic contribution to the simplest physical traits, such as height and hair color, is significantly mediated by environmental factors. And the genetic contribution to the traits we value most deeply, from intelligence to compassion, is conceded by even the most enthusiastic geneti
7、c researchers to be limited and indirect. Indeed, we need only appeal to our ordinary experience with identical twinsthat they are different people despite their similaritiesto appreciate that genetic determinism is false.Furthermore, because of the extra steps involved, cloning will probably always
8、 be riskierthat is, less likely to result in a live birth that in vitro fertilization (IVF) and embryo transfer. For example, it took more than 275 attempts before the researchers were able to obtain a successful sheep clone. While cloning methods may improve, we should note that even standard IVF t
9、echniques typically have success rate of less than 20 percent. So why would anyone go to the trouble of cloning?1.What process resulted in the successful cloning of an adult sheep?2.According to the essay, in what respect the relationship between a cloned human being and its counterpart is similar t
10、o the relationship of twins?3.What does the concept of genetic determinism state?4.What are examples of genetic contribution?5.According to the passage, where does the danger of cloning lie in?问题1选项A.In vitro fertilization.B.Embryo transfer.C.The insertion of a mature sheeps DNA into an unfertilized
11、 egg.D.The adoption of physical and genetic characteristics.问题2选项A.Both a cloned human being and a part of twins have the same conceptions of morality.B.The environment one is born into affects their conceptions of reality.C.The connection is strictly genetic.D.The similarities are biological, legal
12、, moral and psychological.问题3选项A.That each individuals DNA determines their capabilities in life regardless of environmental morality.B.Environmental factors greatly influence persons actions and beliefs.C.Both genes and environments determine human traits.D.Identical twins have the capacity to be c
13、ompletely independent beings and have individual ideas.问题4选项A.Hair and eye color.B.A childs attitude towards their parents.C.A persons values.D.Fashion style.问题5选项A.The power of technology.B.Ethical and moral issues.C.The mistaken understanding of its significance.D.The exact replication of dangerou
14、s people.【答案】第1题:C第2题:B第3题:A第4题:A第5题:C【解析】1.文章第一段第一句话提到 in which the sheeps DNA was inserted into an unfertilized sheep egg to produce a lamb with identical DNA, 所以选项C符合题意。2.文章第二段提到克隆人的产生就像一对完全相同的双胞胎。接着指出双胞胎是两个人，除了基因相似外，生理、心理、道德和法律上都是相对独立的，所以选项A、C、D可以排除，选项B符合题意。3.文章第二段the view that genes determine e
15、verything about us, and that environmental factors or the random events in human development are utterly insignificant, 所以选项A符合题意。4.文章第三段the genetic contribution to the simplest physical traits,such as height and hair color “基因只会对非常简单的特点有所影响，比如身高和头发颜色”，所以选项A符合题意。5.文章第一段最后一句话The danger, therefore, lies not in the power of the technology,but in the understanding of its significance. “因此危险并不是在于技术的力量，而是在对其重要性的理解上。”选项C符合题意。2. 单选题Look at the terrible situation I am in！If only I （ ） your advice.问题1选项A.followB.had followedC.would followD.have followed【答案】B【解析】考查虚拟语
