精选优质文档-倾情为你奉上高中英语阅读训练及答案3 共2篇AHowever, the idea of cloning humans still remains. While many people feel that cloning human tissue, as for organs for transplant might be valuable, many others feel that cloning a whole human is unethical (不道德的)From a moral standpoint, much has to do with how some reproductive clones are made. Many believe that an embryo, even when simply fertilized sperm (精子) and egg is a human and thus should not be destroyed. Experimenta-tion of embryos to produce
