一位俄国学者指出：“美国思想体系的传统任何时候都不会转变为僵死的教条，而是在每一新的历史阶段为回答时代的呼唤而获得新生。”20世纪30年代初，美国“回答时代的呼唤而获得新生”的举措是（    ）

    I think life will be different in the future. People 1live under the sea or on the moon. They can fly to the moon in a short time 2 spaceship. People will travel to other planets too. Robots will3all the housework for people. They can even take care 4 babies for people. No one will 5newspapers. All the people "see" news with a pair of special glasses.