Question

8．It turns out that nodding off in class may not be such a bad idea after all，as a new study has shown that going to sleep shortly after learning new material is the best way to remember it．
According to US lead author Jessica Payne，a psychologist at the University of Notre Dame in Indiana，nodding off after learning something new is like"telling"the sleeping brain what to remember．
Along with colleagues，she studied 207students who habitually slept for at least six hours per night．Participants were casually selected to study declarative （陈述的），semantically （语义上） related or unrelated word pairs at 9am or 9pm，and returned for testing 30minutes，12hours or 24ours later．
Declarative memory refers to the ability to remember facts and events with awareness，and can be broken down into episodic memory （memory for events） and semantic memory （memory for facts about the world）．People routinely use both types of memory every day-recalling where we parked today or learning how a colleague prefers to be addressed．
At the 12-hour retest，memory overall was better following a night of sleep compared to a day of wakefulness．
At the 24-hour retest，with all subjects having received both a full night of sleep and a full day of wakefulness，subjects'memories were better when sleep occurred shortly after learning，rather than following a full day of wakefulness．
"Our study confirms that sleeping directly after learning something new is beneficial for memory．What's new about this study is that we tried to shine light on sleep's influence on both types of declarative memory by studying semantically unrelated and related word pairs，"Payne said．
"Since we found that sleeping soon after learning benefited both types of memory，this means that it would be a good thing to practise any information you need to remember just before going to bed．In some sense，you may be'telling'the sleeping brain what to remember．"

67．The research led by Jessica Payre tries toB．
A．encourage students to nod off in class
B．explain the influence of sleep on memory
C．show students ways to improve memory
D．introduce students two types of memory
68．Which of the following can be an example of episodic memory？D
A．Light travels faster than sound．    B．Beijing is the capital of China．
C．π=3.1415926…D．Tom attended a friend's party．
69．The 24-hour retest shows that subjects'memories were better followingC．
A．a full day of sleep                           B．a full day of wakefulness
C．a sleep shortly after learning                D．a night of sleep after learning
70．What can we infer from the text？C
A．Nodding off in class is very uncommon．
B．People are better at remembering events than facts．
C．Reciting new English words before going to bed may help．
D．The longer sleep we have，the better memory we will have．

Answer 1

分析 本文是一篇科教类阅读．文章主要介绍了一项新的研究，表明了课堂上打瞌睡也许并不是一件坏事，学习新的东西后马上睡觉会对记忆有好处．

解答 BDCC
 67．B 推理判断题  It turns out that nodding off in class may not be such a bad idea after all，as a new study has shown that going to sleep shortly after learning new material is the best way to remember it．一项新研究显示学完新知识后马上打个小盹是最佳的记忆方法可知，Jessica Payre研究的是睡眠对记忆力的影响，故答案为B
68．D 细节理解题 根据Declarative memory refers to the ability to remember facts and events with awareness，and can be broken down into episodic memory （memory for events）可知，episodic memory 指的是情景记忆，Tom attended a friend's party．Tom参加朋友聚会属于情景，故答案为D
69．C 细节理解题 根据…subjects'memories were better when sleep occurred shortly after learning，rather than following a full day of wakefulness．可知，学完之后立即休息对记忆有帮助，故答案为C
70．C  推理判断题 根据Since we found that sleeping soon after learning benefited both types of memory，this means that it would be a good thing to practise any information you need to remember just before going to bed．可知，学完之后立即休息对记忆有帮助，所以睡觉前记忆单词记忆会更好一些，故答案为C．

点评 本文考察学生的理解推断能力以及细心程度，只要抓住文章的关键词，采用寻读的方法查找细节，就能找到正确答案．