【单选题】
（131） 王教授说：“管理学院的大学生的家庭困难情况比起以前有了很大的改观，因为我的学生现在要求安排勤工俭学的人越来越少了”。 上面的结论是由下列哪个假设得出的___
A. 现在大学生父母亲的收入增加了，使得大学生不再需要勤工俭学。
B. 尽管家境有了改善，大学生也应当参加勤工俭学来锻炼自己的全面能力。
C. 要求学校安排勤工俭学是学生家庭是否困难的一个重要标志。
D. 大学生把更多的时间用在学业上，勤工俭学的人就少了
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C
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（132） 根据下面科普内容“要把火山进行系统的分类也不是一件容易的事，因而出现某些学者偏重以火山的构造形态分类；另一些学者则根据火山的喷发特征，主要是爆发的猛烈程度来分类。”概括：这段话说明了 ___
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（135） 历史上杰出人物的产生是___
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（136） 面对消极腐败的东西，我们一定要提高警惕，做到见微知著，防微杜渐。因为___。
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