Question

10．Can you smell two things at once？This experiment comes from the research of two scientists from Rice University．Denise Chen and Wen Zhou have been experimenting with the science of smell，and have made some very interesting discoveries．
      To explore that，you will need two things with strong characteristic smells and，of course，your nose．The idea is to smell a different smell with each nostril （鼻孔）．Hold one smell ver y close to your right nostril，and the other smell very close to your left nostril．Then breathe in and pay close attention to what you smell．
      What you should find is that one smell will be very strong．After another sniff （嗅） or two，the first smell will go away，and you will smell the other smell．Keep sniffing，and the first smell will come back．Instead of smelling the two smells evenly （均勻地） mixed，they will work in turns，one after the other．
      Why？Chen and Zhou found that your sense of smell acts much like your sense of sight．Hold a book in front of your nose，so that your left eye sees things on the left side of the book，and your right eye sees things on the right side of the book．You will find that your sight works in turns，first on the left side of the book and then on the right side．Notice that you can't focus your left eye on one object while focusing your right eye on another object．Your brain jumps back and forth （來(lái)回地），paying attention to one and then the other．The same thing happens with your nostrils．If they are smelling different smells，your brain pays attention to one and then the other．
12．Which of the following is TRUE about the experiment？C

13．Denise Chen and Wen Zhou discovered thatA．
A．our brain focuses on one thing at a time
B．our two nostrils act differently towards the same smell
C．our nose prefers to smell stronger smells   
D．our sense of smell is connected with our sense of sight
14．The last paragraph is developed byB．
A．giving examples  
B．making a comparison   
C．telling a story    
D．showing the results
15．The main purpose of the text is toB．
A．report an important event          
B．describe a scientific experiment 
C．study how the sense of sight works   
D．introduce two scientists from Rice University．

Answer 1

分析 文章主要是介紹兩個(gè)科學(xué)家所做的一個(gè)與鼻子有關(guān)的實(shí)驗(yàn)．

解答 CABB
12  C 推理判斷題．  根據(jù)文章第二 段 Hold one smell very close to your right nostril，and the other smell very close to your left nostril．可知把一種氣味盡量靠近右邊的鼻子，另外一個(gè)氣味靠近左邊的鼻子，故選C．
13  A 細(xì)節(jié)題． 根據(jù)文章最后一段The same thing happens with your nostrils．If they are smelling different smells，your brain pays attention to one and then the other．可知他們兩人發(fā)現(xiàn)，當(dāng)一個(gè)人用兩個(gè)鼻孔同時(shí)去聞不同的味道時(shí)，他的大腦只能讓他一次專注到一種味道上，故選A．
14  B 推理判斷題．  根據(jù)文章最后一段The same thing happens with your nostrils．If they are smelling different smells，your brain pays attention to one and then the other．可知通過(guò)眼睛視物和鼻孔聞物的對(duì)比來(lái)說(shuō)明人的大腦只能讓他一次專注到一個(gè)事物上，故選B．
15  B主旨大意題．  通讀全文可知文章主要是介紹兩個(gè)科學(xué)家所做的一個(gè)與鼻子有關(guān)的實(shí)驗(yàn)．

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力，做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句，和題干進(jìn)行比較，再做出正確的選擇．在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí)，要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷．