With the development of science and technology,people's lives have been greatly is no doubt that we benefit a lot from the scientific advancements in many different instance,the invention of computers dramatically increases work efficiency and helps complete many difficult tasks that were impossible in the from this,new discoveries and technology in medicine improve people's health,which allows them to enjoy a longer progress of science also enlarges human's ablilities to explore the world around them,from up into space to deep under the to the development of science and technology,human society has enjoyed continuous prosperity and more like a double-edged sword,science can cause problems is known to all that the nuclear power,an environmentally friendly source of energy,can also be developed into a weapon of mass addition,human cloning,which is expected to cure many serious diseases and save lives,may bring disasters of social a matter of fact,most of the improvements in science are made at the cost of our precious natural resources and have done great harm to the environment where we live to deal with the progress of science and technology properly is worth our careful consideration.