12.The Beagle Brigade
Return to the United States from a trip abroad,and your luggage will get inspected by the U.S.Department of Agriculture's Beagle Brigade.Working with human canine officer partners,the beagles sniff out potential threats to American agriculture.
An orange or apple,for example,might harbor a Mediterranean fruit fly.Hams could carry a disease such as hog cholera.These and other pests could destroy farmer's crops and livestock."Once we introduce something that is not part of the environment,there may riot be any controls for it in the environment,"notes USDA's Lisa Davis at the National Dog Detector Training Center in Orlando,Florida."The best thing for us to do is to prevent it from coming across the border and becoming established.''
When a beagle sniffs specific food odors,it signals its partners by sitting.The human officer then investigates.When the dog is right-which happens 90percent of the time--it gets an edible treat.
"The dog is not out there working,"explains Davis."It's out there playing.It's a game to the dog."The handlers give the beagles plenty of food and loving.They make sure they get first-class medical attention,too.When the dogs finally retire after 9to 11years,the USDA finds caring homes for them.It's a dog's life indeed!
How well does the Beagle Brigade do its job?"On average,"notes Davis,"each year our 54teams prevent around 75,000 prohibited,restricted items."Since even one infested (为患的) item could cause widespread destruction,that's a great result for America's agricultural environment.

24.According to the article,what is a problem with agricultural products brought into the United States by passengers traveling from abroad?D
A.They generate similar types of food odors.
B.They are difficult to identify,even with trained dogs.
C.They must be inspected before being allowed to enter the country.
D.They may carry something that could harm the agricultural environment.
25.According to the article,how does the beagle signal that it has found a suspicious food product?C
A.By barking at its partner.
B.By begging for a treat.
C.By sitting next to the item.
D.By playing a game.
26.How is the beagle congratulated for finding a specific food product?D
A.The handler praises it with a hug.
B.The beagle gets to play for a few hours.
C.The beagle gets to retire to a caring home.
D.The handler gives it an edible reward.
27.In the article,the author supports the use of the Beagle Brigade byA.
A.providing statistics about the number of items detected by the dogs
B.showing that the dogs enjoy discovering prohibited items
C.pointing out that good homes are found for the dogs when they retire
D.praising the fact that the dogs work for a government agency.
6.English is a very interesting language.It has borrowed words from many other languages.Immigrants coming into the United States have contributed many words to the language,which have kept their original pronunciation."Coolie"and"kowtow"were taken from the Chinese language,"kamikaze from the Japanese,"shampoo"from India,"blitz"from German,"amigo"and"Los Angeles"from Spanish and so on.
Many students have studied English for years,some as many as eight.However,some students still have difficulty in speaking fluent English.Some know many words but are unable to discern them when native speakers use them.In our Oral English classes we will focus on speaking and listening to native English speakers.For this reason,because we are trying to train your ears to hear English and your mouths to speak intelligible (易理解的) English,we will have a rule that ONLY ENGLISH will be spoken in our English classes.Anyone speaking Chinese in class will be required to pay a fine in order to encourage the speaking and understanding of English.If teachers enter a classroom and discover that anyone is speaking Chinese,they will require everyone in the room to pay the fine.It is everyone's job to enforce the English-Only rule.It is for your bene fit.It is because we want to accustom your ears to hearing English.
Other subjects may be learned only from books but the only way to learn a foreign language is to SPEAK IT!Students are often nervous about speaking in class at first but we hope to make the classes fun,so you will forget your nervousness and learn to speak out.Enjoy your classes.
25.The first paragraph is mainly aboutC.
A.the difficulty of learning English         
B.different words in different languages
C.how interesting and various English is     
D.the immigrants'contributions to America
26.The underlined word"discern"in Para 2 can be replaced byB.
A.notice    B.understand     C.hear      D.speak
27.In the author's opinion,the only way to learn a language well is toD.
A.listen to it on the radio 
B.learn it from books  
C.play games with it 
D.speak it often
28.The article is probably aimed atC.
A.Japanese students   
B.German students  
C.Chinese students    
D.Indian students.
13.Are you sometimes a little tired and sleepy in the early afternoon?Many people feel this way after lunch.They may think that eating lunch is the cause of the sleepiness.Or,in summer,they may think it is the heat.However,the real reason lies inside their bodies.At that time-about eight hours after you wake up-your body temperature goes down.This is what makes you slow down and feel sleepy.Scientists have tested sleep habits in experiments where there was no night or day.The people in these experiments almost always followed a similar sleeping pattern.They slept for one long period and then for one short period about eight hours later.
In many parts of the world,people take naps(小睡) in the middle of the day.This is especially true in warmer climates(气候),where the heat makes work difficult in the early afternoon.Researchers are now saying that naps are good for everyone in any climate.A daily nap gives one a more rested body and mind and therefore is good for health in general.In countries where naps are traditional (传统的),people often suffer less from problem such as heart disease.
Many working people,unfortunately,have no time to take naps.Though doctors may advise taking naps,employers do not allow it!If you do have the chance,however,here are a few tips about making the most of your nap.Remember that the best time to take a nap is about eight hours after you get up.A short sleep too late in the day may only make you feel more tired and sleepy afterward.This can also happen if you sleep for too long.If you do not have enough time,try a short nap-even ten minutes of sleep can be helpful.
33.Why do people feel sleepy in the early afternoon according to the text?C
A.They eat too much for lunch.
B.They sleep too little at night.
C.Their body temperature becomes lower.
D.The weather becomes a lot warmer.
34.If you get up at 6:30 am,what is the best time for you to take a nap?C
A.About 12:30 pm.
B.About 1:30 pm.
C.About 2:30 pm                 
D.About 3:30 pm
35.What would be the best title for the text?B
A.Just for a Rest             
B.All for a Nap
C.A Special Sleep Pattern.
D.Taking Naps in Warmer Climate.

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