9．There is some unwelcome news for students preparing for exams and officers putting in long hours-----you don't need the break as much as you may think that makes you feel less tired．
Scientists have long assumed that willpower （意志力） is a limited resource，which is why you feel the need to have a rest，have a snack and come back to a task when you're feeling better．They argued that the only way to restore willpower was by rest，food or entertainment．
But psychologists have challenged this theory，saying weak willpower is all in your head．They found that people's beliefs in willpower determine how long and how well they'll be able to work on a tough mental exercise．"If you think of willpower as something that's limited，you're more likely to be tired when you perform a difficult task，"said Prof．Veronika Job．"'But if you think of willpower as something that is not easily used up，you can go on and on．"
The researchers designed four experiments to test students'beliefs in willpower．After a tiring task，those，who believed or were led to believe that willpower is a limited resource，performed worse on standard concentration tests than those who thought of willpower as something they had more control over．They also found that leading up to final exam week，students who believed the limited resource theory ate junk food 24percent more often than those who believed they had more control in resisting temptation （诱惑）．
Mr．Job said．"The theory that willpower is a limited resource is interesting，but it has had unintended consequences．Students who may already have trouble studying are being told that their power of concentration is limited，and they need to take frequent breaks．But a belief in willpower as a non-limited resource makes people stronger in their ability to work through challenges．'"
The findings could help people who are battling temptation．Willpower isn't driven by a biologically based process as much as we used to think．The belief in it is what influences your behavior．
32．The theory that willpower is limited supports thatC．
A．people must eat snacks when they feel tired
B．there's no way to strengthen people's willpower
C．people do need a break to restore their willpower
D．weak willpower doesn't affect people's life much
33．What have the scientists long believed regarding willpower？C
A．It is in the charge of people．
B．There is no way to restore willpower．
C．It is a limited resource．
D．It doesn't easily run out．
34．Which of the following best helps the students to prepare better for their exams？D
A．Push themselves even if they want to take a break．
B．Don't eat fast food while studying．
C．Stay in a comfortable and quiet place．
D．Remind themselves willpower is not limited．
35．What does the passage want to tell us？B
A．How to build strong willpower B．A new theory about willpower
C．The great influence of willpower D．Willpower doesn't last long．
分析 人们长久以来认为意志力是有限的，所以人们累了就需要休息，但是一项新的研究表明，人的意志力是无限的，这会导致人们更加专注，对于那些和诱惑做斗争的人，这个发现是很有用的．
解答 32---35 CCDB
32．答案C．细节理解题．从第二段的句子：They argued that the only way to restore willpower was by rest，food or entertainment可知，人们的意志力是有限的，支持了人们需要休息修复他们的意志力这种说法，选C．
33．答案C．细节理解题．从文章第二段的句子：Scientists have long assumed that willpower （意志力） is a limited resource，which is why you feel the need to have a rest，have a snack and come back to a task when you're feeling better可知，科学家长期以来认为意志力是一个有限的资源，选C．
34．答案D．细节理解题．从文章第四段的句子：After a tiring task，those，who believed or were led to believe that willpower is a limited resource，performed worse on standard concentration tests than those who thought of willpower as something they had more control over．可知提醒孩子自己意志力不是有限的可以帮助他们更好的准备考试．选D．
35．答案B．主旨大意题．从全篇文章和第一段的句子：There is some unwelcome news for students preparing for exams and officers putting in long hours-----you don't need the break as much as you may think that makes you feel less tired可知，文章介绍了一个关于意志力的新发现，所以B是最好的标题．
点评 科教类阅读文应对策略：
1、要想做好科普英语阅读理解题，同学们就要注意平时多读科普知识类文章，学习科普知识，积累常见的科普词汇，从根本上提高科普英语的阅读能力．
2、要熟悉科普类文章的结构特点．科普类文章一般由标题（Head line），导语（Introduction），背景（Back ground），主体（Main body）和结尾（End）五部分构成．标题是文章中心思想高度而又精辟的概括，但根据历年的高考情况来看，这类阅读理解材料一般不给标题，而要同学们选择标题．导语一般位于整篇文章的首段．背景交待一个事实的起因．主体则对导语概括的事实进行详细叙述，这一部分命题往往最多，因此，阅读时，同学们要把这部分作为重点．结尾往往也是中心思想的概括，并与导语相呼应，命题者常在此要设计一道推理判断题．
3、在进行推理判断时，同学们一定要以阅读材料所提供的科学事实为依据，同时所得出的结论还应符合基本的科普常识．
