题目内容
3．Americans use many expressions with the word"dog"．People in the United States love their dogs and treat them well．They take their dogs for walks，let them play outside and give them good food and medical care．However，dogs without owners to care for lead a different kind of life．The expression"to lead a dog's life"describes a person who has an unhappy life．Some people say we live in a dog-eat-dog world．That means many people are competing for the same things，like good jobs．They say that to be successful，a person has to work like a dog．This means they have to work very，very hard．Such hard work can make people dog-tired．And，the situation would be even worse if they became sick as a dog．
Still，people say every dog has its day．This means that every person enjoys a successful period during his or her life．To be successful，people often have to learn new skills．Yet，some people say that you can never teach an old dog new tricks．They believe that older people do not like to learn new things and will not change the way they do things．
People who are unkind or uncaring can be described as meaner than a junkyard dog．Junkyard dogs live in places where people throw away things they do not want．Mean dogs are often used to guard this property．They bark or attack people who try to enter the property．However，sometimes a person who appears to be mean and threatening is really not so bad．We say his bark is worse than his bite．
Doghouse provide shelter but they can be cold and lonely in the winter．Husbands and wives use this doghouse when they are angry at each other．For example，a woman might get angry at her husband for coming home late or forgetting their wedding anniversary．She might tell him that he is in the doghouse and treats him badly．However，the husband may decide that it is best to leave things alone and not create more problems．He might decide to let sleeping dogs lie．
Dog expressions are also used to describe the weather．The dog days of summer are the hottest days of the year．A rainstorm may cool the weather．But we do not want it to rain too hard．We do not want it to rain cats and dogs．
66．The underlined expression"work like a dog"in Paragraph 2 meansD
A．become successful
B．have an unhappy life
C．compete for the same things
D．work very，very hard
67．If a man comes home late，his wife might say angrily，"D．"
A．it will rain cats and dogs
B．every dog has its day
C．you lead a dog's life
D．you are in the doghouse
68．"Leave things untouched"has the same meaning as"C"．
A．lead a dog's life
B．teach an old dog new tricks
C．let sleeping dogs lie
D．make people dog-tired
69．It has been really hot these days，asB
A．it rains cats and dogs
B．we are having the dog days of summer
C．we're leading a dog's life
D．we're in the dog's house
70．What does the text mainly talk about？B
A．Expressions in American culture
B．Some expressions with the word dog
C．A good way to learn English well
D．Dog's influence on American culture．
分析 本文是一篇历史文化类短文，说明了美国人使用的很多短语里面都含有dog，并且举了一些例子．
解答 66．D 词义猜测题．根据第二段"They say that to be successful，a person has to work like a dog．The hard work can make people dog-tired．"可知要想成功就要特别努力，这么努力的工作会把人弄的筋疲力尽（dog-tired），所以work like a dog是"努力工作"的意思．故选D．
67．D 细节理解题．根据第四段"Husbands and wives use doghouse when they are angry at each other．"可知丈夫或妻子在相互生气的时候，会使用狗窝（doghouse）这个短语．故选D．
68．C 词义猜测题．根据第四段"However，the husband may decide that it is best to leave things alone and not create more problems．He might decide to let sleeping dogs lie．"可知let sleeping dogs lie的意思是"顺其自然"，故选C．
69．B 细节理解题．根据最后一段第二句"The dog days of summer are the hottest days of the year．"可知正确答案为B项．
70．B主旨大意题．本文主要介绍了美国人使用的一些含有dog的短语，故选B．
点评 注意段首或句首，整篇文章的首句或某一段的首句往往开宗明义，点出整篇文章的主題或某一段的主题．由首句可判断大意，揭示故事发生的人物、时间、地点、背景等多方面的信息，这对我们理解全文或全段有着重要的启示作用．细读首句，我们常可"窺一斑而见全豹"．
