6．Most Americans enjoy moving from place to place very often．In some states only one house in five h——青夏教育精英家教网—

6．Most Americans enjoy moving from place to place very often．In some states only one house in five has people living in it who have been there for more than five years．One may be born in one city，and go to school in another．He may finish his middle school education in two or three cities and attend a college far across the country．And when he has entered business，he may possibly move from job to job．Moving from job to job，or job-hopping，is a very common practice in the United States．
This practice is not good by and large．Yet every chance to change a job offers the worker an opportunity to move up to a higher position and to get better wages．And job-hopping also gives employers-the bosses，the managers the-chance to benefit from the new ideas and skills that different people bring to their firms or factories．Then，most Americans love traveling．People often drive their automobiles 120to 160kilometers just to have dinner with a friend or even fly to Europe and back just for watching a football match．It is because of this-the fact that Americans are in constant motion and，in this way，it is also easy for you to become friends with Americans．And the friendship can be close and strong for a while，but then disappears as soon as the individuals move away from each other．But if these people should meet again，even years later，they would be delighted to continue the friendship．So don't be unhappy when you fail to find lifetime friendships or relationships in the United States．
51．"Job-hopping"meansD．
A．moving from place to place           B．looking for work
C．hoping to get a job                  D．moving from job to job
52．It is inferred thatA．
A．Americans like to make friends but don't specially attach importance to it
B．it's impossible to find lifetime friendships or relationships in the United States
C．Americans ignore friendships and relationships with others
D．Americans make friends just for fun
53．Personally，the authorB job-hopping．
A．is against    B．thinks well of    C．wants to stop     D．doesn't go along with．

19．Every day we are exposed to images，videos，music and news．In this age of visual and aural hyper-stimulation，the medium of radio is making a great comeback．
"We're at the beginning of a golden age of audio（音频），"said US-based podcaster Alex Blumberg in an article in The Sydney Morning Herald．In the last month alone，15percent of US adults listened to a radio podcast （播客）．These statistics，released by Edison Research，show the successful evolution of traditional radio broadcasts to the present day's digital podcast format．The term"podcast"was invented in 2004，but the trend only started gaining mainstream popularity in recent years．With the sharp increase in consumer demand for smartphones and tablets，podcast sales have jumped．
The appeal of the podcast partly lies in its multiplatform delivery and on-demand capabilities （功能）．You can listen during those extra minutes of the day when you're walking to the shops，waiting in a queue or riding the subway．Similar to television shows，podcasts are generally free to download and most offer new content every week．
Donna Jackson，22，Sydney University media graduate，listens to podcasts two or three times a week，via iTunes．"I listen while I'm wandering around the house doing something else．It makes completing a boring task much more enjoyable…And it's an easy way of keeping in touch with what's going on in the rest of the world，"she said，"I mainly listen to BBC podcasts，but recently I've also been listening to This American Life and Serial．They have a special skill to really draw you in．"
Unlike television and music，the audio format has the potential to create a deep impression on readers．Blumberg says this owes to the podcast's ability"to create close relationship and emotional connection．"Sydney University undergraduate Hazel Proust，majoring in social work and arts，agrees．"When you're listening，it feels as if the voice of the podcast's storyteller is talking directly to you．It's comforting，"said Proust．
It seems the age-old tradition of verbal storytelling is very much alive and well．
54．From the first two paragraphs，we can learn thatC．
A．traditional broadcast has come back
B．Americans love listening to the radio
C．podcasts have become very popular today
D．smartphones sell well because of podcasts
55．The writer mentions Donna Jackson mainly toB．
A．tell how young people relax themselves
B．explain why young people like podcasts
C．introduce what programs podcasts are presenting
D．show how popular podcasts are presenting
56．What is probably the best title of the passage？A
A．Return of RadioB．Opinions of Podcast
C．Features of RadioD．Technology of Podcast．

18．One way for students to prevent H7N9flu virus is to open the windows of the classroom to allow the air to _______．（　　）

A．

17．Good health is the most valuable thing a person can have but one cannot take good health for granted．It is important to remember that the body needs proper care in order to be healthy．There are three things that a person can do to help stay healthy，eating right food，getting enough sleep，and exercising regularly．
Proper nutrition（营养） is important for good health．Your body cannot work well unless it receives the proper kind"fuel"．Don't eat too much food with lots of sugar and fat．Eat plenty of foods high in protein（蛋白质），like meat，fish，eggs and nuts．Vegetables and fruits are very important because they provide necessary vitamins and minerals．However，don't overeat．It is not helpful to be overweight．
Getting the proper amount of sleep is also important．If you don't get enough sleep，you feel tired and easily get angry．You have no energy．Over a long period of time a little amount of sleep may even result in a change of personality（人的个性）．Be sure to allow yourself from seven to nine hours of sleep each day．If you do，your body will feel strong and refreshed，and  your mind will be sharp．
Finally，get plenty of exercise．Exercise makes the body stronger，strengthens the muscles（肌肉），and prevents you from gaining weight．It also improves your heart and lungs．If you follow a regular exercise program，you will probably increase your life-span（寿命）．Any kind of exercise is good．Most sports are good for keeping the body in good shape：basketball，swimming，bicycling，running and so on．Sports are not only good for your body，but they are enjoyable and interesting，too．
If everybody were to eat the right foods，get plenty of sleep and exercise regularly，the world would be a happier and healthier place．We would all live to be much older and wiser．

63．In order to keep good health，C．
A．we should eat much sugar and fat
B．we need a large amount of meat
C．we should take in proper nutrition
D．we must overeat vegetables and fruits
64．Eating more and sleeping lessD．
A．makes us healthier    B．helps keep our personality
C．gets us more energy   D．does harm to our health
65．In the 4th paragraph，the writer wants to tell usB．
A．how we can strengthen our muscles B．how important for us to take exercise
C．how we can increase your life-span D．how enjoyable and interesting sports are
66．The best title for the article should be"C"．
A．Eating and Exercising    B．Exercising Regularly
C．Staying Healthy          D．Sleeping Enough．

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