做GRE阅读题时，定位是非常重要的环节，正确的定位能够节省做题时间提高正确率，错误的定位则会让你满盘皆输。而定位一般是靠关键词来进行的，但是这些“关键词”也常有陷阱，喜欢无事献殷情。所以，这种非奸即盗的定位题往往错误率很高，给大家看一个例题吧。
❶Archaeologists studying Bonito phase (ca. A.D. 900-1140) Native American ceramics from Chaco Canyon, New Mexico, observed that many pots had been altered after firing to revise their decorative designs--usually, intricate geometric patterns painted in black on white slipped surfaces. ❷In some cases, a new design over an earlier one; less often, the original design was simply covered with white slip. ❸Crown and Wills doubt that the alterations were made to correct design errors. ❹Many Chaco pots with design errors were left unaltered. ❺Furthermore, when errors were corrected, revisions were made prior to firing—either by painting directly over the error or by scraping off designs and applying new slip and paint, which is a less time-consuming method than repainting and refiring flawed pots.
1. According to the passage, which of the following is true of Bonito phase Chaco pots?
A. Relatively few of them have original designs concealed beneath white surfaces.
B. Relatively few of them were altered after firing.
C. Many of their alterations increased the intricacy of their painted designs.
D. Many of them have some flaw in their shape or structure.
E. Many of them were altered more than once.
根据题目，判断这是事实信息题，所以考查定位+同义替换，接下来，很多同学就会用题干中的大写去定位，因为非常吸引眼球也好找，结果第1句就能找到，所以认为第1句就是本题的区间，然后去和选项对应。至此，游戏结束——本题的答案根本就不在第1句。
如果你仔细观察，你会发现，全文每一句话都在讲Bonito phase Chaco pots，所以本题属于有定位词，没法定位的情况。那要解决这题，要么读全文，要么选项双定位，当然在考试的过程中，如果答题时间比较紧张，本题建议先Mark，跳过。
总结，今后在定位过程中，遇到大写，时间等非常吸引眼球的信息时，一定要三思，考虑是否全文都有对应的信息，从而及时识别出这种“陷阱”。
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