Question

9．Does solving a math problem give you a headache？Do you feel nervous when you sit a math exam？For most students，math can be tough but scientists have proved that math problems can actually trigger（引起） physical pain．
Scientists came to this conclusion with an in-depth experiment，which was published in the Public Library of Science One journal．They began by finding out how much participants fear math．Those involved were asked a series of questions such as how they feel when they receive a math textbook or when they walk into a math lesson．
Based on their answers，participants were divided into groups．One group was made up of people who were particularly afraid of math and participants in the other group were more comfortable with the subject．
Both groups were then given either math tasks or word tasks．When a math task was going to come next，a yellow circle would appear but when a word task was soon to come，a blue square would be shown．
Using a brain-scan machine，scientists noticed that whenever people from Group One saw a yellow circle，their brain would respond in a way similar to when their body is feeling pain．It was like the pain they would feel，for example，if they burnt their hand on a hot stove．But they reacted less strongly when they knew that they would be faced with a word task．
However，scientists saw no strong brain response from people in the second group．
Math can be difficult，and for those with high levels of mathematics-anxiety （HMA），math is associated with tension，apprehension（憂慮） and fear．"When you are really thinking about the math problems，you r mind is racing and you are worrying about all the things that could go wrong，"explained Ian Lyons from University of Chicago，US，leader of the study．"The higher a person's anxiety of a maths task，the more he activated brain regions associated with threat detection，and the experience of pain．"
More interestingly，the brain activity disappeared when participants actually started dealing with the math tasks．"This means that it's not that math itself hurts； rather，the expectation of mathis painful，"Lyons said．
Based on the study，scientists suggested that things could be done to help students worry less and move past their fear of math，which might mean they perform better in tests．
72．In the first stage，scientists ask participants some questions toB．
A．see whether math hurts                  
B．find out how much they fear math
C．observe how their brain response            
D．test their endurance of pain
73．The underlined word"the expectation of math"is closest in meaning toD．
A．the attempt of learning math                
B．the motivation to work out math problem 
C．the effort to understand math               
D．the act of thinking about math
74．Which is the best title for the passage？C
A．How to overcome math fear．
B．Physical pain affects math performance．
C．Math pain in your brain．
D．Unknown truth about pain．
75．What can be concluded from the experiment？D
A．The expectation of math has no relation to students'confidence in math．
B．Moderate mathematic anxiety improves students'academic performance．
C．Effective solutions have been worked out to lower students'anxiety of math．
D．Physical pain caused by HMA disappears in the process of doing math problem．

Answer 1

分析 本文是一篇科教類閱讀，解決一個(gè)數(shù)學(xué)問(wèn)題給你頭痛嗎？你感到緊張當(dāng)你坐一個(gè)數(shù)學(xué)考試嗎？對(duì)于大多數(shù)學(xué)生來(lái)說(shuō)，數(shù)學(xué)很困難但是科學(xué)家已經(jīng)證明數(shù)學(xué)問(wèn)題可以引發(fā)身體疼痛．本文以此展開談?wù)摚�主要講述了數(shù)學(xué)問(wèn)題可以引發(fā)身體疼痛的一些研究．

解答 72．答案：B．細(xì)節(jié)理解題．根據(jù)"They began by finding out how much participants fear math．"可知，第一階段，科學(xué)家問(wèn)參與者一些問(wèn)題找出多少他們害怕數(shù)學(xué)．故選B．
73．答案：D．詞義理解題．根據(jù)"This means that it's not that math itself hurts； rather，the expectation of mathis painful"可知，句意為"這不意味著數(shù)學(xué)本身是傷害，相反，思考數(shù)學(xué)是痛苦的"．故該詞與"the act of thinking about math"意思相近．故選D．
74．答案：C．主旨大意題．閱讀全文，根據(jù)文章內(nèi)容，尤其是"For most students，math can be tough but scientists have proved that math problems can actually trigger（引起） physical pain．"可知，本文主要講述了數(shù)學(xué)對(duì)大腦的傷害．故選C．
75．答案：D．細(xì)節(jié)理解題．根據(jù)"the brain activity disappeared when participants actually started dealing with the math tasks"可知，在解數(shù)學(xué)問(wèn)題的過(guò)程中，HMA造成的身體疼痛會(huì)消失．故選D．

點(diǎn)評(píng) 本文是一篇科教類閱讀，題目涉及多道細(xì)節(jié)理解題．主旨大意題，詞義理解題．做題時(shí)學(xué)生應(yīng)仔細(xì)閱讀原文，把握文章主要內(nèi)容，聯(lián)系文章上下文內(nèi)容并結(jié)合所給選項(xiàng)含義，從中選出正確答案，一定要做到有理有據(jù)，切忌胡亂猜測(cè)．