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本期重点单词：Deteriorate,Extinguish,Fluctuate Deteriorate 恶化,变坏 His health had deteriorated while he was in prison. Extinguish 使消亡,使破灭,熄灭,破灭 Nothing could extinguish his faith in human nature. Fluctuate 波动,涨落,起伏 The price of vegetables and fruits fluctuates according to the season. 本期重点句型：倒装句,宾语从句,定语从句等 1.Among the most powerfui engines of modern economic growt have been technological changes that raise output relative to inputs. 2.But what really needs to done is to share these lessons learned so that other parts of the world can also benefit and learn about what does work at the community level. 3.This difference between ape and human has been noted by research who have observed that the former will do anything to avoid making eye contact with a fellow troop member. 答案解析： 1.他在狱中时健康已经恶化.2.没有什么能使他丧失对人性的信心.3.蔬菜和水果的价格随季节波动. 1.本句是倒装句,主语是technological changes,that引导的定语从句修饰主语.短语output relative to inputs意思是投入产出比率.2.本句中,what引导的是主语从句so that 引导的是目的状语从句,第二个what引导的是宾语从句,做learn about的宾语.3.本句中,who 引导的是定语从句修饰researchs,该定语从句中又包含了一个由that引导的宾语从句做observe的宾语. | 
