托福阅读易错题解析 | 修辞目的题

Question
2025年 08月 23日真题 (Indigo)

Despite its questionable reputation, South Carolina indigo was exported to Britain in large quantities, garnering wealth for growers in the colony and supplying dyers and ultimately cloth manufacturers with a blue that colored many garments. In fact, South Carolina indigo colored the majority of British-made blue cloth, since that dye was cheaper and "homegrown." Although French and Spanish indigo certainly dyed expensive, custom-made fabrics produced in Britain and colored material for less elite wear there, costly foreign indigo was not a wise choice to color more common cloth. By the middle of the eighteenth century, a great deal of such fabric was being manufactured, largely in Ireland and England's West Country. Cheaper, lighter, and easier to clean, common cloth was often cotton mixed with silk, wool, flax, hemp, and other materials. Since consumers liked blue and indigo was readily available, economical, and simple to make relatively long-lasting, it showed up on a great many everyday garments, accessories, and furnishings.

Why does the author note that "costly foreign indigo was not a wise choice to color more common cloth"?
A. To emphasize the superiority of common cloth
B. To emphasize the wisdom of coloring more elite fabrics with homegrown indigo
C. To explain why it was difficult to f i n d British buyers for foreign indigo
D. To explain the popularity of South Carolina indigo among British dyers

思路解析

题目类型：修辞目的题
干扰选项：A、B/C
干扰类型：无中生有/过度推断

干扰项分析
选项A：无中生有
选项A声称：为了强调普通布料的优越性
详细分析：作者的讨论的是从经济角度讨论染料选择，而没有评价布料本身。句子中提到“普通布料”，只是为了说明这是一个价格敏感的市场，从而从经济成本角度讨论不同染料的普及性。

选项B：无中生有
选项B声称：为了强调用本土indigo染色布料的明智性
详细分析：原文中，目标句讨论的是“昂贵的外国indigo”不适用于普通布料，并没有提到用本土indigo染色布料。目标句作用是从反面排除这个昂贵选项，从而间接解释为什么便宜的South Carolina indigo会成为普遍选择。

选项C：过度推断
选项C声称：为了解释为什么外国靛蓝难以找到英国买家。
详细分析：作者在文中陈述了用昂贵染料染普通布料“不划算”，但是并没延伸讨论该选择是否导致了foreign indigo难以找到买家的结果。

做题策略
1. 原文定位
2. 锁定定位句所证明的观点句
3. 观点句和选项同义替换

正确答案：A
详细正确思路
原文定位
目标句："costly foreign indigo was not a wise choice to color more common cloth"

锁定定位句所证明的观点句
从段落逻辑结构判断，该句前一句就是其服务的核心观点句——"South Carolina indigo colored the majority of British-made blue cloth, since that dye was cheaper and 'homegrown.'"（South Carolina indigo染制了大多数英国生产的蓝色布料，因为这种染料更便宜且“产自本土”。）
具体分析：
观点核心： 因为South Carolina indigo廉价，所以它在英国蓝色布料生产中占据主导地位。
作者采用了对比论证的方法：首先承认昂贵foreign indigo有高端市场（昂贵、定制的布料）： "Although French and Spanish indigo certainly dyed expensive, custom-made fabrics..."；紧接着强调对于这种需求量大、价格敏感的产品，成本是首要考虑因素。"...costly foreign indigo was not a wise choice to color more common cloth." 从而佐证South Carolina indigo成为染制这些普通布料的明智且必然的选择。
总而言之，目标句作为对观点句的支撑，通过说明“昂贵的foreign indigo不适合普通布料”这一事实，来具体论证“便宜”如何使南卡靛蓝成为更明智、更普遍的选择，从而解释了其流行的原因。

观点句和选项同义替换
观点句： "South Carolina indigo colored the majority of British-made blue cloth, since that dye was cheaper and 'homegrown'."
正确选项D： "To explain the popularity of South Carolina indigo among British dyers"
关键词替换：
观点句中 "colored the majority of British-made blue cloth"（染制了大多数英国蓝布），与选项中的 "popularity"对应。
观点句中 "since that dye was cheaper"（因为它更便宜）解释了这种流行现象的原因，与选项中的 "explain the popularity"对应。

总结

本题的典型难点在于准确识别作者运用具体细节的深层逻辑意图。学生容易陷入两个常见误区：首先是被目标句的字面意思吸引，忽略了其服务的核心论点；其次是基于文中事实过度引申出未被讨论的结果，违背了答案必须紧扣直接目的的原则。要有效应对这类题目，建议采用结构化的解题法：步，要在定位目标句后，向前回溯，找到它直接服务的上一级观点句；第二步，主动分析目标句是通过举例、对比还是解释原因等方式来支撑该观点；第三步，用观点句的核心含义去校验选项，正确选项应是观点句的同义转述或直接逻辑延伸。修辞目的题的答案描述的是句子的“功能”而不是单纯“内容”：目标句是证明某个核心论点的论据，需要学生完成从具体细节到宏观意图的逻辑回溯。