12．Do you know how it is when you see someone yawn and you start yawning too？Or how hard it is to be among people laughing and not laugh yourself？Well，apparently it's because we have mirror neurons （鏡像神經(jīng)元） in our brains．
Put simply，the existence of mirror neurons suggests that every time we see someone else do something，our brains copy it，whether or not we actually perform the same action．This explains a great deal about how we learn to smile，talk，walk，dance or play sports．But the idea goes further：mirror neurons not only appear to explain physical actions，they also tell us that there is biological basis for the way we understand other people．
Mirror neurons can undoubtedly be found all over our brains，but especially in the areas which relate to our ability to use languages，and to understand how other people feel．Researchers discovered that if they gave people sentences to listen to （for example：The hand took hold of the ball），the same mirror neurons were triggered as when the action was actually performed （in this example，actually taking hold of a ball）．
Any problems with mirror neurons may well result in problems with behavior．Much research suggests that people with social and behavioral problems have mirror neurons which are not fully functioning．However，it is not yet known exactly how these discoveries might help find treatments for social disorders．
Research into mirror neurons seems to provide us with ever more information concerning how humans behave and communicate．Indeed，it may turn out to be the equivalent （相等物） for neuroscience of what Enstein's theory of relativity was for physics．And the next time you feel the urge to cough in the cinema when someone else does-well，perhaps you'll understand why．

32．Mirror neurons can explainC．
A．why we cry when we are hurt
B．why we cough when we suffer from a cold
C．why we smile when we see someone else smile
D．why we yawn when we see someone else stay up late
33．The underlined word"triggered"in Paragraph 3probably means"B"．
A．broken upB．set ofC．built upD．cut off
34．Which of the following statements is TRUE about mirror neurons？D
A．They result in bad behavior and social disorders
B．They control human physical actions and feelings
C．They determine our knowledge and language abilities
D．They relate to human behavior and communication
35．What is the passage mainly about？B
A．Existence of mirror neurons．
B．Functions of mirror neurons．
C．Ways to find mirror neurons．
D．Problems of mirror neurons．

分析 本文是一篇科教類閱讀，屬于說明文，你知道別人打呵欠你也跟著打呵欠，在眾多正在大笑的人群中而你很難不笑嗎？這是你的神經(jīng)元起作用，本文主要講述神經(jīng)元對于人類的行為和人類互動的作用．

解答 32．答案：C．細節(jié)理解題．根據(jù)第二段第一句話theexistence of mirror neurons suggests that every time we see someone else dosomething，our brains imitate （模仿）it，whether or not we actually perform the same action．可知，鏡像神經(jīng)元可以解釋為什么我們微笑當我們看到別人微笑．故選C．
33．答案：B．詞義猜測題．根據(jù)下文的perform和本句的含義可知"如果他們給人們一些句子來聽，那么他們就會發(fā)出同樣的神經(jīng)元和進行一些行為動作一樣．所以劃線部分單詞意為"發(fā)出"和set off近義．故選B．
34．答案：D．推理判斷題．根據(jù)最后一段第一句Researchinto mirror neurons seems to provide us with ever more information concerninghow humans behave and interact（互動）可知，它們與人類行為和溝通相關(guān)．故選D．
35．答案：B．主旨大意題．根據(jù)第一段的疑問句引出神經(jīng)元和下文解釋神經(jīng)元對于人類行為和互動提供更多的信息可以知道，本文主要告訴我們mirror neurons的作用，B項能概括文章大意．故選B．

點評 本文是一篇說明文，題目涉及細節(jié)理解題，詞義猜測題，推理判斷題，主旨大意題，做題時應結(jié)合文章上下文內(nèi)容并根據(jù)所給選項的含義進行分析，從而得出正確答案．切記胡亂猜測，一定要做到有理有據(jù)．

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