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Unit 3 Science and nature教材背景链接人类基因图的发现，使得克隆人的话题再次成为人们争议的焦点，克隆干细胞，可以治疗疾病，但是克隆人就有悖于伦理道德，我们要的是克隆技术，而非复制的人类。Unit 3 Science and natureArgument about Human Cloning 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 scientists 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( 道德 )or religion.Unit 3 Science and natureTaking 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 be 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.Unit 3 Science and natureCloning 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. Unit 3 Science and natureArguments against cloning are also on a perfectly practical side. Primarily, I believe that cloning would step in the normal...