7. What is on the ever-growing list mentioned in the first paragraph?
- A. Positive effects of doing exercises.
- B. Exercises suitable for the middle-aged.
- C. Experimental studies on diseases.
- D. Advantages of sporty woman over man
答案：A
答案句：The benefits of regular exercise are well documented but there’s a new bonus to add to the ever-growing list. New researchers found that middle-aged women who were physically fit could be nearly 90 percent less likely to develop dementia in later life, and as they did, it came on a decade later than less sporty women.
参考译文：经常锻炼的好处已有充分记载，但不断增长的清单上又添了一项新的好处。新的研究人员发现，身体健康的的中年女性日后患痴呆症的可能性要低近90%，而且即使患病，也比不爱运动的女性晚十年发病。
定位线索：题干“the ever-growing list”→答案句首句“the ever-growing list”；文中“benefits of regular exercise”对应选项A“Positive effects of doing exercises”（同义转述）。
解析：题干问第一段提到的“不断增长的清单”上有什么。答案句首句明确指出“The benefits of regular exercise”（经常锻炼的好处）是清单上的内容，第二句具体说明这一新好处是降低痴呆风险。选项A“Positive effects of doing exercises”（锻炼的积极影响）正是对“benefits of regular exercise”的同义转述。选项B“适合中年人的锻炼”、C“疾病实验研究”、D“运动型女性相对男性的优势”均与原文无关，属于无中生有。
8. Why did the researchers ask the woman to do bicycle exercise?
- A. To predict their maximum heart rate.
- B. To assess their cardiovascular capacity
- C. To change their habits of working out
- D. To detect their potential health problems
答案：B
答案句：For the study, 191 women with an average age of 50 took a bicycle exercise test until they were exhausted to measure their peak (最大值的) cardiovascular capacity.
参考译文：在这项研究中，191名平均年龄为50岁的女性进行了自行车运动测试，直到精疲力竭，以测量她们的最大心血管能力。
定位线索：题干“bicycle exercise”→答案句“bicycle exercise test”；文中“measure their peak cardiovascular capacity”对应选项B“assess their cardiovascular capacity”（同义转述）。
解析：题干问研究者为什么让女性做自行车运动。答案句明确说明目的是“to measure their peak cardiovascular capacity”（测量最大心血管能力），选项B“To assess their cardiovascular capacity”（评估心血管能力）与此直接对应。选项A“预测最大心率”偷换概念，原文是测量心血管能力而非心率；C“改变锻炼习惯”、D“检测潜在健康问题”均无原文依据。
9. What do we know about Dr Horder's study?
- A. It aimed to find a cure for dementia.
- B. Data collection was a lengthy process.
- C. Some participants withdrew from it.
- D. The results were far from satisfactory.
答案：B
答案句：These women were then tested for dementia six times over the following four decades.
参考译文：在接下来的四十年里，这些女性接受了六次痴呆症检测。
定位线索：题干“Dr Horder's study”→答案句“These women were then tested”；文中“six times over the following four decades”对应选项B“Data collection was a lengthy process”（数据收集过程漫长，四十年六次检测体现时间跨度）。
解析：题干问关于Horder博士的研究我们知道什么。答案句指出研究对受试者进行了长达四十年的六次检测，说明数据收集过程漫长，选项B正确。选项A“旨在找到痴呆症疗法”错误，原文明确说研究只显示关联而非因果关系；C“部分参与者退出”无中生有；D“结果远不令人满意”与原文不符，研究者称发现“令人兴奋”。
10. Which of the following is the best title for the text?
- A. More Women Are Exercising to Prevent Dementia
- B. Middle-Aged Women Need to Do More Exercise
- C. Fit Women Are Less Likely to Develop Dementia
- D. Biking Improves Women's Cardiovascular Fitness
答案：C
答案句：New researchers found that middle-aged women who were physically fit could be nearly 90 percent less likely to develop dementia in later life, and as they did, it came on a decade later than less sporty women. … Five percent of the highly fit women developed dementia, compared to 25 percent of the women with medium fitness and 32 percent of the women with low fitness.
参考译文：新的研究人员发现，身体健康的的中年女性日后患痴呆症的可能性要低近90%，而且即使患病，也比不爱运动的女性晚十年发病。……在高度健康的女性中，有5%患上了痴呆症，而中等健康水平的女性为25%，低健康水平的女性为32%。
定位线索：题干“best title”→答案句首句点明主题“middle-aged women who were physically fit … less likely to develop dementia”；文中“physically fit”对应选项C“Fit Women”，“less likely to develop dementia”对应“Less Likely to Develop Dementia”。
解析：主旨题需概括全文核心。首段即提出研究发现：中年女性身体健康则患痴呆风险更低，后文用数据（5% vs 25% vs 32%）进一步支持这一观点，全文围绕“健康女性更不易患痴呆”展开，选项C准确概括。选项A“更多女性锻炼预防痴呆”范围扩大，原文未提及“更多”；B“中年女性需要多锻炼”是建议而非研究发现；D“骑车改善心血管健康”只是研究手段，非主旨。