Recently there was a major discovery in the scientific research—the mapping of all DNA in

Recently there was a major discovery in the scientific research—the mapping of all DNA in a human gene（基因） is complete．Couple of years ago, this seems an impossible task for scientist to accomplish．All this progress in science leads us to believe that the day, when the human being will be cloned, is not far away．Human cloning has always been a topic of argument, in terms of morality or religion．
Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning．If the clone was free of genetic limitations．then the other clone would be as well．The latter could foe inserted in the woman and allowed to ripen to term．Moreover, cloning would enable women, who can't get pregnant, to have children of their own．
Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs．This, surely would be greatly beneficial to millions of unfortunate people around the world that are expected to lose their lives due to failure of single （or more） organ （s）．It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists．
Arguments against cloning are also on a perfectly practical side．Primarily, I believe that cloning would step in the normal cycle of life．There would be a large number of same genes, which reduce the chances of improvement, and, in turn, development—the fundamental reason how living things naturally adapt to the ever-changing environment．Life processes failing to do so might result in untimely disappearance．Furthermore, cloning would make the uniqueness that each one of us possesses disappear．Thus, leading to creation of genetically engineered groups of people for specific purposes and, chances are, that those individuals would be regarded as objects rather than people in the society．
Scientists haven't 100 per cent．guaranteed that the first cloned humans will be normal．Thus this could result in introduction of additional limitations in the human gene-pool．
Regarding such arguable topics in black or white approach seems very innocent to me personally．We should rather try to look at all shades of it．I believe that cloning is only legal if its purpose is for cloning organs; not humans．Then we could regard this as for saving life instead of creating life．I believe cloning humans is morally and socially unacceptable．
【小题1】Which of the following is true according to the passage?A．Genetic limitation will be beneficial for some womenB．A large number of genes will prevent us from developingC．Prohibition of cloning might limit the freedom of scientistsD．First cloned humans might be normal according to scientists【小题2】What's the author's opinion on cloning?A．Cloning should be entirely banned．B．Cloning should be used in creating life．C．Cloning will take away the right to reproduce．D．Cloning is acceptable if it is used for cloning organs．【小题3】Where can you read this article?A．In a story bookB．In a magazineC．In a science fictionD．In a brochure【小题4】Which of the following shows the structure of the passage?
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(答案→)Ｃ 解析：最近在科学研究方面有了大的发现---人类基因的完整图谱。这一重大发现使人们相信克隆人的那一天不在遥远。克隆人一直受到争议，从道德和宗教方面来说。但是克隆人有好处：一是使那些不孕不育的女性有自己的孩子；二是可以用来克隆器官。但是克隆人使人不在具有唯一性，而且也不能保证正常。所以，克隆器官可以被接受。克隆人无论从道德上还是社会上都不能被接受。【小题1】推理判断题。根据倒数第二段的意思：科学家到现在还不能确定第一批克隆人是否正常，这样就会限制科学家在人类基因方面的研究增加限制。故选C 。【小题2】推理判断题。根据最后一段的I believe that cloning is only legal if its purpose is for cloning organs; not humans．（我认为克隆是合法的，如果目的是克隆器官而不是人。）。由此判断选择D。【小题3】推理判断题。通读全文判断，文章是对克隆人的优点和缺点作了分析，不是选自故事书，也不是科幻小说，更不是小册子，推断B（杂志）最佳。【小题4】结构分析题。全文各段的内容分析：第一段阐明观点，第2、3、4、5分别再具体说明观点，最后一段总结。由此判断Ａ最佳。

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