Question

18．Many people say they can not start their day without first having a cup of coffee or tea．People say these drinks help them think clearly and feel more awake．This is because of  caffeine，a kind of matter found in some plants．Caffeine helps to give a jumpstart to the  nervous system．Now a new report says it may also improve long-term memory．
    Michael Yassa is a neurobiology professor at the University of California．He and other  researchers wanted to know if caffeine could improve what they called memory consolidation．They asked a group of individuals to learn something new，then the same people were given caffeine，the active component in coffee，tea and chocolate．
    He and the other researchers worked with a group of l60 people who were Caffeinefree．On the first day，all the subjects were shown pictures of everyday objects．They were asked to identify whether the pictures could be found inside the house or outdoors．Some of the subjects were then given a caffeine pill，the others were given a placebo-a pill containing an inactive thing．On the second day，all of the subjects were asked to look at more pictures．Some of the images were exactly like the ones they had seen 24 hours early．But other images were different．And a third group of pictures was similar to the first group but a little different．The participants had to decide whether the images they saw were the same or different from the ones on the first day．
    Professor Yassa says their answers help to show the effects of caffeine on memory．He  says those who took the caffeine pills had a ten to twelve percent increase in their ability to   remember the objects．The amount of caffeine the researchers used in the study was similar to  one strong cup of coffee．
    Professor Yassa says pills with a little more caffene also increased memory，but resulted  in some participants appearing more nervous．

61．From the passage，we can learn that caffeineD．
A．Can be found in every plant  
B．can improve people's health
C．is contained only in coffee    
D．can help people think clearly
62．What does Paragraph 3 mainly discuss？A
A．How MichaeI Yassa does his research．
B．Why Michael Yassa does the research．
C．What the result of Michael Yassa research is．   
D．How many people participate in the research．
63．Which of the following statements about the experiment is true？D
A．The participants must be addicted to coffee．
B．All the pictures seen on the second day were the same．
C．All the participants must drink coffee on the first day．
D．The participants saw three groups of pictures on the second day．
64．What does this text mainly tell us？C
A．Coffeeis essential for people's work．
B．Caffeine has negative effects on our health．
C．Caffeine may help better long-term memory．
D．Caffeine can lead to difficult sleeping and anxiety．
65．The author wrote the text in order toB．
A．forbid people to drink coffee
B．report a new research of coffee
C．attract readers to drink coffee
D．introduce the procedure of research．

Answer 1

分析 本文属于说明文阅读，作者通过这篇文章向我们说明了一项关于咖啡因能否改善记忆的研究，Michael Yassa的研究发现服用咖啡因药丸的人会增加百分之十二的记忆力，但有些人服用之后会感到紧张．

解答 61．D  细节理解题，根据第一段People say these drinks help them think clearly and feel more awake．This is because of  caffeine，a kind of matter found in some plants．可知咖啡因可以帮助人们清醒的思考，故选D．
62．A  推理判断题，根据第三段He and the other researchers worked with a group of l60 people who were Caffeinefree．可知本段主要讲述了MichaeI Yassa是如何展开他的研究的，故选A．
63．D  推理判断题，根据第三段On the second day，all of the subjects were asked to look at more pictures．Some of the images were exactly like the ones they had seen 24 hours early．But other images were different．And a third group of pictures was similar to the first group but a little different．可知在第二天的时候参与者看到了三组略有不同的照片，因此D正确；误解分析：文中没有提到参与者需要对咖啡上瘾，故A错；B选项与D矛盾；第三段On the first day，all the subjects were shown pictures of everyday objects．可知第一天参与者只是看一些图片，因此C错；故选D．
64．C  主旨大意题，根据倒数第二段He  says those who took the caffeine pills had a ten to twelve percent increase in their ability to   remember the objects．The amount of caffeine the researchers used in the study was similar to  one strong cup of coffee．可知本文主要讲述了对咖啡因可能有助于更好的长期记忆的研究，故选C．
65．B  推理判断题，通读全文可知本文主要向我们讲述了一项新的关于咖啡的研究报告，故选B．

点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．