基础题
基础题：
*题干：* The author mentions the study in Paragraph 2 mainly to ______.
*原文片段：* ...However, a recent study shows that this method is inefficient. (Paragraph 2)
*选项：* A. prove the method works B. introduce a new method C. highlight the method's flaw D. summarize the previous paragraph
解答过程：
1.
识别：主旨/目的题（
1.1 试卷结构）。
2.
抓取：关键词 "study", "Paragraph 2"。
3.
扫描：定位到第二段。
4.
逻辑分析：句中有
6.1 逻辑关系词 "However"（转折），后接 "inefficient"（低效）。
5.
匹配：C选项 "highlight the method's flaw"（突出缺陷）与 "inefficient" 对应。
*答案：* C
变式题：
*题干：* What can be inferred from the sentence "It is not surprising that..."?
*原文片段：* ...The data is incomplete. It is not surprising that the results are controversial.
*选项：* A. The data is complete. B. The results are accepted. C. The controversy stems from data issues. D. The author is surprised.
解答过程：
1.
识别：推断题（
1.2 阅读能力层级）。
2.
抓取：
13.1 代词 "It" 和 "The results"。
3.
还原：根据前一句，"It" 指代 "The data is incomplete" 这一事实，或者指代整个背景。更准确地说，"It is not surprising that..." 是固定句型，意为“...并不奇怪”，暗示前因导致后果。
4.
逻辑分析：前句说数据不完整，后句说结果有争议不奇怪。隐含逻辑：数据不完整 -> 结果有争议。
5.
匹配：C选项 "The controversy stems from data issues" 符合因果推断。
*答案：* C