6．Although most people believe that formal schooling is required for scientific success，a college degree is not always necessary．（41）Anexcellent example of a man who won fame as a scientist （42）withoutacademic（学术的） training is Vincent J．Schaefer．His formal education ended （43）after two years of high school when he had to go to work in an untrained job at General Electric．Because （44）of his inventive mind and his skill as a model maker，he was soon allowed to try his own experiments in the company laboratory．His natural （45）curiosity（curious） made him wonder about clouds．He developed，after many tries，a method of making clouds rain （46）whenthey would not normally do so．This method，（47）called（call） seeding，has been very （48）helpful（help） to farmers，and（49）itmade him win much fame．
Schaefer believes that for people（50）who，most of all，are interested in the world and everything in it，a college degree is unnecessary．
分析 本文通过Vinccnt J．Schaefer的成功经历告诉我们，尽管大多数人认为正规教育对科学成功来说是必要的，但是大学学位不一定是必需的，关键要看一个人的实际能力．
解答 41．An；考查冠词，因excellent以元音音素开头，应用不定冠词an．
42．without；考查介词，without和名词连用表示某种状况，意为"没有"．
43．after；考查介词，表示过去的一段时间之后应和介词after连用．
44．of； because of是复合介词，意为"因为"，后接名词或代词．
45．curiosity；考查名词，此处须用名词作主语，curious的名词形式是curiosity．
46．when；考查时间状语从句，此处表示时间，应用when引导时间状语从句．
47．called；考查分词作定语，this method与call存在被动关系，故用过去分词作定语．
48．helpful；考查形容词，very后应接help的形容词helpful"有益的"．
49．it；考查代词，it此处指前一分句的整个情况．
50．who；考查关系代词，who用来引导定语从句，在从句中作主语，先行词是people，故用关系代词who．
点评 首先要通读全文，了解大意，抓住上下文语境所提供的信息，仔细分析带空格的句子，明确空格所要填的词义，词型和短语搭配，给出所要填的正确形式，然后整体阅读短文，核对答案．
