题目

他一生有2000多项发明，被称为“发明大王”，他是 A．牛顿                      B．达尔文                   C．爱因斯坦               D．爱迪生 答案：DThe purpose of the research had a more important meaning for them than_______.A．oursB．those of oursC．it had for oursD．it did for us