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以下是历年gre真题考试阅读部分出现的句子，这些句子往往是解题的关键，所以对于这些句子的理解就显得十分重要。考生可以用这些句子做英译中的练习，加强语感练习。 171. But its easy to kill creativity by giving rewards for poor performance or creating too much anticipation for rewards. 172. The fridges effect upon the environment has been evident, while its contribution to human happiness has been insignificant. 173. It may then take us a long time to render it intelligent by loading in the right software or by altering the architecture but that too will happen. 174. As the intelligence of robots increase to match that of humans and as their cost declines through economies of scale we may use them to expand our frontiers. 175. Further ahead, by a combination of the great wealth this new age will bring and the technology it will provide, the construction of a vast, man-created world in space, home to thousands or millions of people, will be within our power. 176. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations. 177. If they are not sincere and do not practise what they preach, their children may grow confused and emotionally insecure when they grow old enough to think for themselves, and realize they have been to some extent fooled. | 
