Aftera couple has had their first child, to their disappointment they became inf-组卷网

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After a couple has had their first child, to their disappointment they became infertile and couldn’t have more children. Cloning would enable such a couple to have a second child, perhaps a younger twin to the child they already have. Many couples have difficulty having children, and sometimes it is impossible for couples to have children because they are infertile. Cloning would allow these couples to have children.

It is hard to tell someone that they cannot use cloning to have children when no other possible ways to have children are available. This is one reason why it is difficult to decide whether cloning is moral or not. The following are some of the reasons why cloning should be allowed.

Through cloning, research can progress. We possibly can learn more about cell. We may develop technology to allow easier genetic testing and fixing problems such as spinal cord injuries, cancer, and many more.

Cloning organs for organ transplants (移植) is one of the major practical reasons that cloning should be allowed. There is always a high demand for organs. Some argue for the cloning of humans to create extra body parts. Others talk of just wanting to clone an organ to replace a faulty organ.

Rejuvenation (恢复青春) is also a key argument for advocates (提倡) of cloning. Some scientists believe that injecting cloned healthy heart cells into damaged heart tissue will lead to healing of the heart. By combining the technology for cloning and the technology for growing human stem cells, conditions like Alzheimer’s, Parkinson’s, and some other ageing disease may be curable. The possibilities are endless and may be left undiscovered if human cloning is forbidden.

【小题1】The underlined word “infertile” in Para. 1 means “________”.