51. What is scientists' finding about dreaming?
- A. It involves disconnected weird images.
- B. It resembles fragments of science fiction.
- C. Dreaming about a learned task betters its performance.
- D. Dreaming about things being learned disturbs one's sleep.
答案：C
答案句：Scientists have found that dreaming about a task we've learned is associated with improved performance in that activity (suggesting that there's some truth to the popular notion that we're “getting” a foreign language once we begin dreaming in it).
参考译文：科学家发现，梦见我们学过的任务与该活动表现的提高有关（这表明，一旦我们开始用外语做梦，我们就在“掌握”这门语言的流行观念是有一定道理的）。
定位线索：题干“scientists' finding”→答案句“Scientists have found”；文中“dreaming about a task we've learned”对应选项C“Dreaming about a learned task”；文中“improved performance”对应选项C“betters its performance”。
解析：题干问科学家的发现，答案句直接给出“dreaming about a task we've learned is associated with improved performance”，即梦见学过的任务与表现提高相关，与C项“Dreaming about a learned task betters its performance”同义转述。A项“disconnected weird images”是原文对梦的描述，但非发现；B项“science fiction”是作者比喻，非发现；D项“disturbs one's sleep”无中生有。
54. What does Robert Stickgold suggest about enhancing learning?
- A. Having a little sleep after studying in the day.
- B. Staying up late before going to bed.
- C. Having a dream about anything.
- D. Thinking about the odds of dreaming about the material.
答案：A
答案句：Robert Stickgold, one of the Harvard researchers, suggests that studying right before bedtime or taking a nap following a study session in the afternoon might increase the odds of dreaming about the material.
参考译文：哈佛大学研究员之一罗伯特·斯蒂克戈尔德建议，睡前学习或下午学习后小睡片刻可能会增加梦见所学内容的几率。
定位线索：题干“Robert Stickgold suggest about enhancing learning”→答案句“Robert Stickgold...suggests”；文中“taking a nap following a study session in the afternoon”对应选项A“Having a little sleep after studying in the day”。
解析：题干问Robert Stickgold关于增强学习的建议，答案句直接给出“taking a nap following a study session in the afternoon”，即下午学习后小睡，对应A项。B项“staying up late”与原文“studying right before bedtime”不符；C项“dreaming about anything”范围扩大，原文说“dreaming about the material”；D项曲解原文“Think about that”，非建议内容。
55. What can be inferred about dreaming from the passage?
- A. We may enhance our learning through dreaming.
- B. Dreaming improves your language ability.
- C. All sleepwalkers perform dance moves when they are sleeping.
- D. Taking a nap after learning can help you find the way through the maze.
答案：A
答案句：Scientists have found that dreaming about a task we've learned is associated with improved performance in that activity … In a 2010 study, researchers at Harvard Medical School reported that college students who dreamed about a computer maze（迷宫）task they had learned showed a 10-fold improvement in their ability to find their way through the maze compared with participants who did not dream about the task.
参考译文：科学家发现，梦见我们学过的任务与该活动表现的提高有关……在2010年的一项研究中，哈佛医学院的研究人员报告说，梦见所学电脑迷宫任务的大学生，其找到迷宫路径的能力比没有梦见该任务的学生提高了10倍。
定位线索：题干“inferred about dreaming”→答案句两处：“dreaming about a task we've learned is associated with improved performance”和“showed a 10-fold improvement”；文中“improved performance”对应选项A“enhance our learning”。
解析：题干要求推断关于梦的结论，答案句通过研究发现和具体实验表明做梦能提高学习表现，可推断出A项“We may enhance our learning through dreaming”。B项“language ability”只是原文括号中的例子，非主要推断；C项“all sleepwalkers”范围扩大，原文只提一位女性患者；D项“find the way through the maze”是实验具体内容，但“taking a nap”是Robert的建议，非实验结论，且“help you”过度推断。