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47. feminine and weak 48. lose composure 49. stress-related disorders 50. their relationship with partners 51. aggressive 参考答案 52) A solve virtually existing all problems 细节题。抓住时间点In the early 2oth century 我们从第一句 offer solutions to almost every problem 便可知道答案。选择A选项。 53) D They realized that science and technology alone were no guarantee for a better world. 推论题。 我们首先比较容易排除A和C项。B项具有迷惑性，关键是看the stability of a society depended heavily on humanistic study这个选项仔细看就会发现说得太绝对了，社会的问题主要是靠人文主义的研究?显然不是很恰当。我们从下面那句也可以推断出选D比较恰当。 Two world wars and a Great Depression rocked the confidence of many people that scientific expertise alone could create a prosperous and ordered world. 54) C America is lagging behind in the STEMS disciplines. 细节题。主要在第二段里找答案。从段落后两句There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines. 我们可以推断出是选C选项。 A和D选项比较容易排除。不选B选项，因为文章中 India, China, Japan, and other regions seem to be seizing technological leadership. seem to 表明这几个国家只是有种趋势，但还没有have overtaken。 | 
