单选题 . ①Archaeologists 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. ②In some cases, a new design was imposed over an earlier one; less often, the original design was simply covered with white slip. ③Crown and Wills doubt that the alterations were made to correct design errors. ④Many Chaco pots with design errors were left unaltered. ⑤Furthermore, 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.

43. The author of the passage mentions Crown and Wills primarily in order to ______

A、 Distinguish among different factors that might have caused Chaco potters to alter their pots' decorative designs.
B、 Introduce new evidence related to the question of why Chaco potters altered their pots' decorative designs.
C、 Show how one potential explanation for the alteration of Chaco pots has been discounted.
D、 Present a hypothesis about why Chaco pots were altered to revise their decorative designs.
E、 Explain how archaeologists discerned the method by which Chaco pots were originally decorated.

【正确答案】 C

【答案解析】 C：本题属于功能题，定位句3s版本：改变不是用于修正设计缺陷的。因此克朗和威尔斯的意义在于排除掉“修正缺陷”这一观点，选项C正确。
B：定位句是观点，不是证据。文章的证据是最后两句，但是这两句也只是在解释为什么“修正缺陷”这一解释不对，而没有解释为什么陶罐的设计被改变。
D：克朗和威尔斯是用来反驳一个假说，而非呈现一个假说。注意，本文要解决的问题是这些陶罐为什么被改变了，克朗和威尔斯只是排除了一种解释，他们本身没有解决这个问题，因此他们并没有给出任何的假说或观点。