【正文】
e an immense difference in these childrenamp。39。s lives. iamp。39。m still very much an optimist, and i believe that progress on even the worldamp。39。s toughest problems is possible —— and itamp。39。s happening every day. weamp。39。re seeing new drugs for deadly diseases, new diagnostic tools, and new attention paid to the health problems in the developing world. iamp。39。m excited by the possibilities i see for medicine, for education and, of course, for technology. and i believe that through our natural inventiveness,creativity and willingness to solve tough problems, weamp。39。re going to make some amazing achievements in all these areas in my lifetime.