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2010年PETS4试题分类及技巧
完型填空的基本解题原则是从已知信息中寻找定位出所有与未知填空相关联的信息线索，通过综合分析这些线索推测未知填空的答案。因此，我们在这里总结一些具有普遍性的寻找定位相关已知线索的方法和规律。些方法更多地适用于动词、名词、形容词和副词等实词。
1.根据文章的中心主线，采用无关字排除法。
完型文章一般都有非常明确的中心主线，且整个文章很紧凑，就是紧紧围绕着中心主线展开。因此，理论上正确的选项一定是紧扣文章的主题和中心主线的。故而，一些看上去明显和文章主题和中心主线毫无关系的选项基本上可以排除在正确答案之外。
2.依据文章的导向，采用同现做题法。
同现是一种词汇的衔接手段。完型文章由于常常有明确的中心主线，所以作者往往会使用一些重点词汇围绕着中心主线贯穿全文。同现实际上就是一组具有相同倾向性的词语，这些词语所表现的倾向性往往与中心主线中的导向一致，或者说这些同现词语的任务就是对文章的导向进行展开支持。因此，文章的整体导向这个已知线索可以成为解出这些同现词语的关键信息。
3.查找形成复现概念的已知词。
复现是完型文章中词汇的另一种衔接手段，即表达相同意思的词汇在文章的不同地方出现。复现可以是相同的词重复出现，也可以是用不同的词表达相同的意思。复现的解题意义在于：如果判断出一个未知填空与上下文的那些已知词汇有复现关系，只要从选项中选出与那些词汇意义相同的就是正确答案。
4.利用关联成分。
关联是完型文章中经常出现的一种结构，即将两个或两个以上的同类别词语，比如两个动词、两个形容词以连续排比的结构出现。在这种情况下，两个关联词汇在句子中的语法地位一样，且常常起一样的语法作用，之间又明显具有某种逻辑关系。关联的解题意义在于：出题人一般会将一个关联词语设置成已知信息，另一个是未知的，这样那个已知的词语便成为破解未知词语的关键线索。
5.总分结构对照法。
由于总分之间的基本关系是互相支持，互相印证的对照关系，而且总述是对分述的总结和概括，而分述是对总述的展开。当一些未知填空出现在总述句时，解出这些填空的相关联已知线索往往可以在与其对应的分述部分找到。
6.时间线索。
完型文章中出现的时间信息一般都是非常有用的线索，因为只要通过分析这些时间线索就可以很快把握与这些时间线索联系在一起的信息之间的关系。
考生可以参照一下几个编者精解的典型例题，反复揣摩上述命题思路和解题技巧。
经典例题
Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much has happened 21. As was discussed before, it was not 22 the 19th century that the newspaper became the dominant pre-electronic 23, following in the wake of the pamphlet and the book and in the 24 of the periodical. It was during the same time that the communications revolution 25 up, beginning with transport, the railways and leading 26 through the telegraph, the telephone, radio and motion pictures 27 the 20th century world of the motor car and the airplane. Not everyone sees that process in 28. It is important to do so.
It is generally recognized, 29, that the introduction of the computer in the early 20th century, 30 by the invention of the integrated circuit during the 1960s, radically changed the process, 31 its impact on the media was not immediately 32. As time went by, computers became smaller and more powerful, and they became personal too, as well as 33 , with display becoming sharper and storage 34 increasing. They were thought of, like people, 35 generations, with the distance between generations much 36.
It was within the computer age that the term information society began to be widely used to describe the 37 within which we now live. The communications revolution has 38 both work and leisure and how we think and feel both about place and time, but there have been 39 views about its economic, political, social and cultural implications. Benefits have been weighed 40 harmful outcomes. And generalizations have proved difficult.
21.[A]between[B]before[C]since[D]later
22.[A]after[B]by[C]during[D]until
23.[A]means[B]method[C]medium[D]measure
24.[A]process[B]company[C]light[D]form
25.[A]gathered[B]speeded[C]worked[D]picked
26.[A]on[B]out[C]over[D]off
27.[A]of[B]for[C]beyond[D]into
28.[A]concept[B]dimension[C]effect[D]perspective
29.[A]indeed[B]hence[C]however[D]therefore
30.[A]brought[B]followed[C]stimulated[D]characterized
31.[A]unless[B]since[C]lest[D]although
32.[A]apparent[B]desirable[C]negative[D]plausible
33.[A]institutional[B]universal[C]fundamental[D]instrumental
34.[A]ability[B]capability[C]capacity[D]faculty
35.[A]by means of[B]in terms of[C]with regard to[D]in line with
36.[A]deeper[B]fewer[C]nearer[D]smaller
37.[A]context[B]range[C]scope[D]territory
38.[A]regarded[B]impressed[C]influenced[D]effected
39.[A]competitive[B]controversial[C]distracting[D]irrational
40.[A]above[B]upon[C]against[D]with
