Science and technology have advanced at such a rate that cloning has now become a reality. The possibility of cloning humans is a serious subject and raises moral questions. In my opinion, cloning is useful for research into cures for disease. However, I think that it needs to be done with warning and carefully controlled by governments.
Research into cloning and stem cell (干细胞) production is chiefly aimed at finding new treatments for currently incurable illnesses. While this would improve the quality of life for many, not enough is understood about what effects cloning would have on the world in the future. This is primarily because we do not understand enough about the results of cloning and both the physical and psychological effects that it is likely to have on cloned individuals and on the rest of the world.
Furthermore, it is thought that a cloned individual would be unlikely to survive birth and would suffer from complications (病发症) resulting from changed organs (器官). There are also quite serious moral subjects as well as a risk. Those who are against cloning would argue that scientists have no right to play God and to destroy the natural processes. Producing embryos (胚胎) for the purpose of harvesting stem cells for research presents significant questions about the nature and status of the embryo being produced. It may also make us question whether getting rid of it after use reduces the value we place on human life.
1,3,5 1,3,5
In conclusion, I do not agree that research into cloning using human embryos should continue. This is not only because it may reduce the value we place on human life, but also because not enough is known about the results. However, I do think that if there is a way to produce stem cells using cloning which does not put human life at risk, then governments should continue to support it.
1．According to the writer, what kind of questions does cloning raise?
A．moral B．serious C．scientific D．reality
2．What is the writer’s general opinion on cloning?
A．It is useful in every area of research.
B．It needs to be carefully controlled by governments.
C．It is useful for research into cures for disease if it is controlled.
D．It is only useful for research into cures for disease.
3．The writer’s main reason for opposing cloning is that .
A．not enough is known about the effects of cloning
B．a cloned human would be likely to die as a result of changed organs
C．it has been proven that cloning hasn’t any positive effect on clones
D．it would improve the quality of life for sufferers of incurable diseases
4．In Paragraph 4, the writer thinks governments .
A．should not support any form of research into stem cell production
B．should support all forms of research into stem cell production using cloning
C．should not use cloning which put human life at risk to produce stem
D．should support research into stem cell production that doesn’t harm human life