【正确答案】Since all of us live on the same planet, we need to jointly cope with the challenges facing/confronting the human survival and development. Of the global concerns for human survival and development are the aggravation of the ecological environment, poverty and unemployment, population explosion, the spread of epidemics, the abuse and widespread use of narcotics, the rampant international crimes, and the failure to safeguard the interests of women and children. Since the developed countries owe debts to the ecological deterioration in its industrialization and modernization, they should naturally contribute more to the protection of the environment. The gradual solution to these global concerns not only requires the efforts of all the countries but also their mutual cooperation and close coordination.