Question

6．Your nose has many important jobs，and is always busy．
Smelling
Smelling helps you gather information about the world around you．A good scent （氣體），like flowers，brings you pleasure．A bad scent，like smoke，warns you of danger．Most things around you give off scent particles （微粒） into the air．They enter the nose when you breathe．Nerves（神經(jīng)） in the nose send information to the brain to know what smell it is．You are able to tell thousands of smells．
Breathing
Most of the air you breathe enters through your nose．When you breathe，much oxygen（氧氣）in the air that enters your nose．Your body uses oxygen to unlock the energy（能量） in the food you eat．Even when you sleep，your body needs energy to keep your heart beating and your brain working．
Tasting
Your nose helps you enjoy food．Flavor（味道） is a mixture of taste and smell．The smell of the food helps you know what you are eating．When you are sick and have a running nose，your food doesn't taste as good as before because without smell，food loses most of its flavor．
Smell memory（回憶）
Smells can bring back memories．Your brain uses a way to create a picture in your mind from the odors（氣味）you smell．More smell memories are collected as you get older．
Your nose has many important jobs，and is more than just a smeller!

46．How many important jobs does a nose do according to the passage？What are they？Four．They are smelling、breathing、tasting and semll memory．
47．Smelling helps you learn about the world around you，doesn't it？Yes．
48．What happens to your food if you are sick and have a running nose？It doesn't taste as good as before and loses most of its flavor．
49．How do smells bring back memories？Our brain uses a way to create a picture in our mind from the odors our smell．
50．What do you think of your nose？It has many important jobs，and is always busy．．

Answer 1

分析 你的鼻子有很多重要的工作，總是很忙．
嗅覺
嗅覺能幫助你收集關(guān)于你周圍世界的信息．一個很好的氣味，像花會給你帶來快樂．一個壞的氣味，像煙霧，會給你一個危險警告的信息．你周圍的大多數(shù)東西向空氣中釋放氣味微粒．當(dāng)你呼吸時這些氣味微粒進(jìn)入鼻子．鼻子中的神經(jīng)向大腦發(fā)送信息，以便知道它是什么氣味．你能夠分辨出成千上萬的氣味．
呼吸
你呼吸的大部分空氣通過你的鼻子進(jìn)入．當(dāng)你呼吸時，空氣中的氧氣進(jìn)入你的鼻子．你的身體使用氧氣解開你吃的食物中的能量．即使你睡覺，你的身體也需要能量來維持你的心跳和你的大腦工作．
品嘗
你的鼻子幫助你享受美食．味道是味道和氣味的混合體．食物的氣味幫助你知道你在吃什么．當(dāng)你生病了流鼻涕，你的食物沒有之前的味道好是因為沒有氣味，食物失去其大部分的味道．
氣味記憶
氣味可以帶回記憶．當(dāng)你的鼻子嗅到一種氣味的時候，你的大腦會使用一種方法來創(chuàng)建一個畫面．隨著你變老，你會收集更多的氣味記憶．
你的鼻子有很多重要的工作，不僅僅是一個鼻子！

解答 46．Four．They are smelling、breathing、tasting and semll memory．細(xì)節(jié)理解題．文中分別介紹了鼻子的各種功能，從段落之前的中心詞可以看出，鼻子的功能在這篇文章中介紹了4個，即文章中的小標(biāo)題：smelling、breathing、tasting and semll memory．
47．Yes．細(xì)節(jié)理解題．根據(jù)Smelling helps you gather information about the world around you．A good scent （氣體），like flowers，brings you pleasure．A bad scent，like smoke，warns you of danger．可知，鼻子的嗅覺可以幫助我們理解我們周邊的信息，例如嗅到花香時我們會覺得心情舒暢，問道煙霧時，會給我們一個危險的警告，因此我們的鼻子可以幫助我們了解周邊的環(huán)境（世界）．故答案是肯定的．
48．It doesn't taste as good as before and loses most of its flavor．細(xì)節(jié)理解題．根據(jù)When you are sick and have a running nose，your food doesn't taste as good as before because without smell，food loses most of its flavor．可知，當(dāng)你生病了流鼻涕，你的食物沒有之前的味道好是因為沒有氣味，食物失去其大部分的味道．因此答案為It doesn't taste as good as before and loses most of its flavor．
49．Our brain uses a way to create a picture in our mind from the odors our smell．細(xì)節(jié)理解題．根據(jù)Your brain uses a way to create a picture in your mind from the odors（氣味）you smell．More smell memories are collected as you get older．可知，當(dāng)你的鼻子嗅到一種氣味的時候，你的大腦會使用一種方法來創(chuàng)建一個畫面．因此，之所以你能夠聞到一種氣味之后會引起回憶，是因為我們在聞到氣味的時候，大腦會創(chuàng)建一個畫面．
50．It has many important jobs，and is always busy．文章主旨題．根據(jù)全文的內(nèi)容，首先框定了一個主題，就是關(guān)于我們的鼻子，我們的鼻子具有很多功能，即Your nose has many important jobs，and is always busy．隨后分條論述了鼻子的四個功能，因此本文的主旨就是在說鼻子的功能很多，很重要，因此閱讀本文后，你對鼻子的看法，應(yīng)該是鼻子的功能很重要，即It has many important jobs，and is always busy．

點評 本文是一篇科普類文章．講述的是鼻子的功能及重要性，做題時要在理解好文意的基礎(chǔ)上，與題目有機(jī)的結(jié)合，從文章中找到相關(guān)細(xì)節(jié)性的句子與選項細(xì)細(xì)比對，進(jìn)行選擇或推理判斷，選出符合文章內(nèi)容的正確選項．做題注意靈活，有時可采用排除法或直選法確定出最終答案．