72. 答案：C?

　　【参考译文】下列哪种说法是错误的？? (来源：英语学习门户网站EnglishCN.com)

　　【试题分析】本题为细节题。?

　　【详细解答】短文第四段第二、三句说"…they are most successful when tied to a computer club. He insists there is a vast and important difference between the two, although they complement each other."它告诉了我们，computertowns和computerclubs是有区别而互补的，由此可知，选项C的说法是错误的，故答案应选C。?

　　73．答案：A?

　　【参考译文】下列哪一项不是computertowns的优点？?

　　【试题分析】本题为细节题。?

　　【详细解答】短文第五段第二句说"The computer experts have to learn not to tell people about computers，but have to be able to explain the answers to the questions that people really want to know．"这与选项A "give lectures and talks on computers"相矛盾，而其它几项优点在本段都提到了，故选项A 为正确答案。 ?

　　TEXT C  ?

　　短文大意：本文讨论的是关于人们睡眠长短的问题。?

　　74. 答案：D?

　　【参考译文】作者似乎暗示什么？?

　　【试题分析】本题为细节理解题。?

　　【详细解答】短文首句说"There must be few questions on which responsible opinionis so utterly divided as on that of how much sleep we ought to have．"意思是说"很少有问题像睡眠多长时间为适量这一问题那样存在如此大的意见分歧"，由此可以推知选项D为正确答案。?

　　75. 答案：A?

　　【参考译文】作者为何不同意Dr．Burton的意见？?

　　【试题分析】本题为细节理解题。?

　　【详细解答】由短文第一段第四句说"If he is right many people must be undersleeping, including myself."要是按照Dr．Burton的说法，很多人就一定是睡眠不足，由此可知，作者认为实际情况并非如此，也就是说很少的人如此，故答案选A。?

　　76. 答案：D?

　　【参考译文】在文章的最后一段，作者指出了什么？?

　　【试题分析】本题为细节题。?

　　【详细解答】短文第三段第四句说"It would be a pity to retard our development by holding back those people who are gifted enough to work and play well with less than the average amount of sleep, if indeed it does them no harm." 由此可知，作者认为那些生来就可以少睡觉而且不误工作和玩耍的人不应受到约束，故答案选D。?

　　77. 答案：A?

　　【参考译文】从短文可知作者怎样？?

　　【试题分析】本题为概括题。?

　　【详细解答】通读全文可知，作者先列出了有关睡眠量问题的三种不同观点，继而对每种观点都做了评论，说明了自己的看法，但并没有提出支持哪一观点，也没有提出自己独创的新观或修正别人的观点，故选项A为正确答案。?

　　TEXT D  ?

　　短文大意：本文谈论的是国际间移民的原因及其影响等问题。?

　　78. 答案：C?

　　【参考译文】作者认为"pull factors"如何？?

　　【试题分析】本题为细节题，可用排除法解答。?

　　【详细解答】短文第三段说"Most often these are economic，such as better job opportunities or the availability of good land to farm. …When there is a choice between several attractive potential destinations, the deciding factor might be a non-economic consideration such as the presence of relatives, friends, or at leastfellow countrymen already established in the new place who are willing to help the newcomers settle in." 由此可排除选项A；文中没有谈到与选项B和D相关的信息，故正确答案只有选项C。?

　　79. 答案：B?

　　【参考译文】下列哪一项不是影响人们决定移民的因素？?

　　【试题分析】本题为细节题。?

　　【详细解答】短文第五段第二句说"The same push-pull factors and obstacles operatedifferently on different people…or just because of their varying abilities and personalities．"这里提到了abilities和personalities；本段第三句中提到了marital status。文中没有谈到与education相关的信息，故选项B为正确答案。?