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with the development of science and technology, our side appeared a lot of new things,such as clone,the scientific invention of clone has become a hot topic among people,especially among the young and heated debates are right on their way. now the cloning scientific has been used for many years to produce plants, it has brought us a lot of benefits but has created some serious problems as well. the benefit of cloning is cloning human organs or body parts , such as that if a parson in a traffic accident lost his arm or leg ,or someone get a serious heart disease and face danger ,he need a new body parts replace ,at this time we can use cloning technology copy a new parts of body to replace ,in the this way can be ensure that someone continue to live ,so that the clone is benefit for us . everything has two sides and cloning is not an exception,it has both advantages and disadvantages. on the contrary,most people are against of cloning technology been used in our life, one of the biggest reason is that human cloning technology will break the gender balance,it will be bring up a great chaos. as far as i think cloning technology is more much disadvantage for human being ,we should very careful to use it, i believe that only in this way our life will be more beautiful