单项选择题
| For the first time in history, evolution has taken a backseat. There is an ongoing realization that human beings are capable of directly shaping their own evolution. As we case into the twenty-first century, we realize that genetic engineering is undoubtedly going to have a dramatic (67) on our lives. It seems that with genetic engineering, science has moved from (68) the natural world to redesigning it. Now we must ask ourselves (69) this influence will be for better or for worse. However, scientists remain (70) in their opinions. Some have (71) against the hazards of genetic engineering, (72) others have dismissed these perils as inconsequential. Lewis Wolpert, professor of biology at University College London, says, "There are no ethical (73) because you are not doing any (74) to anyone." And the gist of his statement is staunchly supported by James Watson, a Nobel Prize winner. "If we can make better human beings by knowing how to change (75) , why shouldn’t we do it" They are both extremely (76) of excuses that genetic engineering is a bad idea. (77) , two other prominent scientists have (78) their displeasure about genetic engineering. They have made no (79) of the rather strong and true feelings (80) genetic engineering. George Wald, Nobel Prize winning biologist wrote recombinant DNA technology (81) our society with unprecedented problems in the history of science. It places in human hands the (82) to redesign living organisms, the (83) of some three billion years of evolution. It is happening too fast. It (84) probably the largest ethical problem, for going (85) in this direction may be not only unwise but (86) . |