题目内容
5．Hi Annie，Thank you for writing to me．I will enjoy（51）exchanging （交换） ideas with you and I hope we can know each other better．
You can't make your students learn anything well if they have no interest in it．We all know learning another language is very difficult．You can also tell them English is an （52）international （国际的）language．We should pay（53）attention （关注）to the fact that it's widely （54）spoken （说） all around the world．
Please don't give up because your job gives you lots of （55）chances （机会） to help young people，and I am sure things will be better and better．
Brad．
分析 安妮你好，
谢谢你的来信，我很喜欢和你交换意见，希望我们彼此更了解．
如果你的学生没有兴趣你不会让你的学生学到任何东西的．我们都知道学习另一种语言很难．你也可以告诉他们英语是一种国际语言，我们应该关注的事实是英语在全世界广泛使用．
请不要放弃，因为你的工作给了你很多机会去帮助年轻人，我确信事情会越来越好．
布莱德
解答 51．答案：exchanging．非谓语动词考查．根据前面的enjoy用enjoy doing sth喜欢做某事，交换exchange动词，动名词是exchanging，故答案是exchanging．
52．答案：international．形容词考查．language是名词语言，前面用形容词来修饰，国际的international 形容词，故答案是international．
53．答案：attention．名词考查．结合前面的pay和后面的to，结合中文意思"关注"用pay attention to关注…，attention是名词"关注"．故答案是attention．
54．答案：spoken．被动语态的考查．主语it替代的是上文的English是动词speak"说"的承受者，构成被动关系，结合这里是表达客观事实用一般现在时的被动语态am/is/are+过去分词，speak的过去分词是spoken，故答案是 spoken．
55．答案：chances．名词考查．lots of表示大量的…，后加名词复数或者不可数名词，名词chance机会，可数名词，复数是chances，故答案是chances．
点评 先易后难，逐层深入．紧扣全文内容，联系上下文和语境，展开逻辑推理，注意从上下文中寻找线索，注意词汇的意义、搭配，惯用法，语法，常识等多个角度进行综合考虑．
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Sometimes a person loses a sense．Their other senses become better．For example，a blind person has much better senses of hearing and touch．
Sight
The eyes can only see with light．Light carries the picture of something into the eyes so humans can see it．But do you know that the picture is upside down？The brain has to turn the picture the right way up again．
Hearing
Sounds travel through the air like waves （波）．Human ears are like cups．They catch sound waves for the brain and the brain translates them as different sounds．
Smell
Humans smell with their noses．Most people can recognize about 10，000 kinds of smell．This is amazing!Humans each have five million receptor cells （感受细胞）in their noses．Noses are not only for smelling．They also clean and warm the ail that people breathe in．How does the nose prevent the dirty air from getting into the body？Well，it sneezes（打喷嚏）！
Touch
There are receptor cells for the sense of touch all over the body．This is different from the other senses．Touch receptor cells are in the lowest part of the skin．They help the body to have all kinds of feelings like pain，cold and heat．Some parts of the body （like the finger） are more sensitive（敏感的）than other parts of the body （like the back） because they have more touch receptor cells．
Taste
People can taste food because they have about 10，000 taste buds（味蕾）on their tongues．Old taste buds die and new ones come out every two weeks．But when people get older，this happens less often．That's why old people often complain their food is tasteless．Scientists also find that smokers have fewer taste buds．Do you want food to taste good？Well，don't smoke!
For hundreds of years，people knew the basic tastes were sour，sweet，salty and bitter（苦）．In 2002，a fifth taste，umami（delicious taste） joined the list．Now，a study from Purdue University in the US found that fat could actually be the sixth basic taste．
To be considered a basic one，a taste needs to beable to active certain receptor cells in the mouths．A study has shown that humans have fat receptors in the mouths．Not long after that，a scientist made a study to test a second question：can people taste the difference between fat and other tastes？
Richard Mattes gave the testers six different kinds of things．Each kind had a taste：sweet，salty，sour，bitter，umami or the newcomer-fat．Mattes asked the people to pick out tastes by their differences．This was to test whether or not fat would be picked out from the group．Most of tlie testers could clearly find out the different taste of fat．
Then how does fat taste？"It's terrible．"Mattes said．"However，the taste can be pleasant in a small amount，just as we enjoy the bitterness of chocolate．"
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| sight | eyes | Pictures of real things are completely different in（112）brainfrom those carried by light into the eyes． | |
| hearing | ears | Sound waves caught by ears must go through a process like（113）translatingso that we can hear different sounds． | |
| smell | nose | The fhnctions of nose are smelling，cleaning and warming the air people breathe in．Sneezing is the way to（114）take outthe dirty air we breathe in． | |
| touch | （115） skin | People feel pain，cold and heat（116）because ofthe fnction of the receptors．So the more touch receptors we have，the more sensitive we are． | |
| taste | tongue | Old taste buds die and new ones come out every 2 weeks． Losing a certain amount of taste buds（117）causesthat the old and the smokers have a bad sense of taste．They can't enjoy tasty food like others． | |
| （118）basic tastes | sour sweet salty bitter umami | ||
| one newly found taste | A scientific study has proved people have fat receptors in the mouth．One（119） more study shows：people can clearly（120）tell the taste of fat from other tastes． | ||
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