在英语日益重要的今天，学好英语成了大多数学生的首要目标。为帮助大学生高效的学习英语。特收集以下练习：
171. But it’s easy to kill creativity by giving rewards for poor performance or creating too much anticipation for rewards.
172. The fridge’s 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.
171、可是如不美观对绩效差的业绩也进行奖励或者让人们对奖励有太多的预期，是很轻易扼杀缔造性的。
172、冰箱对情形的影响是显而易见的，而它对促进人们幸福的进献却是眇乎小哉的。
173、装载正确的软件来使它智能化可能要破耗我们很长的时刻，或者也可以改变它的结构，但同样的情形也会发生。
174、因为机械人的智能增添到了人脑的水平，加上经由过程规模经济降低了出产成本，我们可以使用它们来拓展前沿。
175、在未来，经由过程新一代人缔造的财富和科技，培植一座可以容纳千百万人的人造大型太空站也是可以的。