阅读理解。     All too often, a choice that seems sustainable (可持续的) turns out on clo

阅读理解。     All too often, a choice that seems sustainable (可持续的) turns out on clo

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阅读理解。     All too often, a choice that seems sustainable (可持续的) turns out on closer examination to be problematic.
Probably the best example is the rush to produce ethanol (乙醇) for fuel from corn. Corn is a renewable
resource-you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like
a great idea.
     One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol
more sustainable than gas generally, but that"s not the end of the problem. Using corn to make ethanol means
less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the
fallow land -including, in some cases, rain forest in places such as Brazil-into farmland, which in turn gives
off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol
would make up for the forest loss. But by then, climate change would have progressed so far that it might not
help.
     You cannot really declare any practice "sustainable" until you have done a complete life-cycle analysis of its
environmental (环境的) costs. Even then, technology and public keep developing, and that development can
lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on
an ongoing basis. 1. What might directly cause the loss of the forest according to the text? A. The growing demand for energy to make ethanol
B. The increasing carbon dioxide in the air
C. The greater need for farmland
D. The big change in weather. 2. The underlined word "it" in the second paragraph refers to "_____." A. the energy benefit
B. the forest loss
C. climate change
D. burning ethanol 3. The author thinks that replacing gas with corn ethanol is _____. A. impractical
B. acceptable
C. admirable
D. useless 4. What does the author mainly discuss in the text? A. Technology
B. Sustainability
C. Ethanol energy
D. Environmental protection
答案
1-4: CAAB
举一反三
完形填空。     People often fall ill because of me.   1  , they can hardly blame me; it is largely their own   2  . A tired person may get   3  , especially when he goes to crowded places with polluted air. A sudden change in   4   is another factor. In hot summer, people turn on the air-conditioner upon returning home. They will catch a cold easily.
     My latest victim is an energetic student. After school, he played football hard for two hours. Though   5 , he still went to the cinema. Then he got back home and took a cold shower immediately.
     I seized this golden chance to   6   him. He reacted, trying to   7   me, but I was already   8   deep in his throat. He kept sneezing (打喷嚏) and his nose was running.   9  he put on some warm clothes, it didn"t work, for there were too many of us. Besides, his sore throat kept  10  him, and he developed a cough to force me and my family out, but  11 .
     The next day he couldn"t go to  12 . He had lost his appetite and was not as  13  as before. His mother made him orange juice every few hours for more vitamin C, which would help his  14 .
     For two days he was  15  by his mother. As he rested more, his defense strengthened and I began to feel the  16 , I knew I had to  17  him before long. But I am not the one who gives up easily, and I made every effort to fight back.  18 , it was my turn to feel  19  now, for his defense system was starting an all-out attack against me. I became  20  and finally my time was over.
     Do you know what I am?
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(     )1. A .Therefore     
(     )2. A .business      
(     )3. A. punished      
(     )4. A. temperature   
(     )5. A. excited       
(     )6. A. injure        
(     )7. A. get on with   
(     )8. A. reproducing   
(     )9. A. Since         
(     )10. A. reminding    
(     )11. A. escaped      
(     )12. A. bed          
(     )13. A. peaceful     
(     )14. A .recovery     
(     )15. A. protected    
(     )16. A. loss         
(     )17. A. leave        
(     )18. A. Uncertainly  
(     )19. A. painful      
(     )20. A. bigger       

B. Besides          
B. responsibility   
B. blamed           
B. season           
B. hurt             
B. bother           
B. get rid of       
B. waiting          
B. Once             
B. upsetting        
B. succeeded        
B. work             
B. afraid           
B. development      
B. nursed           
B. operation        
B. catch            
B. Unsuccessfully   
B. disappointed     
B. weaker           

C. However      
C. excuse       
C. caught       
C. place       
C. late       
C. attack     
C. put up with  
C. hiding       
C. Whether    
C. comforting      
C. regretted  
C. school       
C. active       
C. study      
C. scolded      
C. pressure     
C. forget       
C. Unusually    
C. nervous      
C. smaller    
D. Then          
D. fault         
D. killed        
D. condition     
D. tired         
D. destroy       
D .take hold of               
D. disappearing  
D. Although      
D. influencing   
D. failed        
D. hospital      
D. happy         
D. affected      
D. affected      
D. movement      
D. beat          
D. Unfortunately 
D. ashamed       
D. stronger      
阅读理解。
     Sports can help you keep fit and get in touch with nature .However, whether you are on the mountains,
in the waves, or on the grassland, you should be aware that your sport of choice might have great influence
on the environment.
     Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside,
but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its
courses (球场)  in good condition. This causes major environmental effects. For example, in the dry regions
of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.
     There are many environment-friendly sports. Power walking is one of them that you could take up today.
You don’t need any special equipment except a good pair of shoes; and you don’t have to worry about
resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it
will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel
less anxious, sleep well and have better weight control.
     Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying
products made from recycled materials. But the final goal should be "green gyms". They are better replacements
for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the
countryside or other open spaces. There is no special requirement for you to start your membership. And best
of all, it"s free.
1. Which of the following is the author most probably in favor of?
A. Cycling around a lake.
B. Motor racing in the desert.
C. Playing basketball in a gym.
D. Swimming in a sports center.
2. What do we know about golf from the passage?
A. It is popular in Portugal and Spain.
B. It causes water shortages around the world.
C. It pollutes the earth with chemicals and wastes.
D. It needs water and electricity to keep its courses green.
3. The author uses power walking as an example mainly because _____.
A. it is an outdoor sport
B. it improves our health
C. it uses fewer resources
D. it is recommended by experts
4.  The author writes the passage to _____.
A. show us the function of major sports
B. encourage us to go in for green sports
C. discuss the major influence of popular sports
D. introduce different types of environment-friendly sports
阅读理解。
     You"ve probably heard countless times how exercise is "good for you", but do you know that it can
actually help you feel good, too? Getting the right amount of exercise can speed up your energy levels
and even help you to feel better emotionally.
     However, like all good things, it"s possible to overdo on exercise. Although exercising is a great way
to maintain a healthy weight, exercising too much to lose weight isn"t healthy. The body needs enough
calories to function properly. Remember that you"re still growing and will continue to do so throughout
your teen years. You"ll need the energy to fuel the growth.
     Exercising too much in an effort to burn calories and lose weight can be a sign of an eating disorder.
If you have any doubts about how much you should be exercising, talk with a school nurse or family
doctor. And if you ever get the feeling that your exercise is in charge of you rather than the other way
around, talk with your doctor, a parent, or another adult you trust.
     Considering the benefits to the heart, muscles, and mind, it"s easy to see why exercise is wise. If you
exercise now, keep it up as you become an adult (this is often the biggest exercise challenge for people
as they get busy with college and careers). One of the great things about exercise is that it"s never too
late to start. And don"t forget that even small things can count as exercise when you"re starting out-like
taking a short bike ride or sweeping fallen leaves. Even walking your dog counts as part of your 60 minutes
a day of exercise (and your vet will tell you that animals need workouts just like humans do, so if your
family dog is fat, he"ll benefit from your dedication, too).
1. Why should teens not exercise too much?
A. Because it causes their body to work disorderly.
B. Because it gets them to have an unhealthy weight.
C. Because it will make them become too thin.
D. Because it burns the energy they need to grow up.
2. The underlined part in Para.3 means that _____.
A. you are charged for your exercise
B. you manage how much exercise you need
C. you are greatly addicted to exercising
D. you do some exercise free of charge
3. What is the biggest challenge for people who want to exercise?
A. To find enough time to exercise.
B. To continue to exercise the whole life.
C. To own suitable equipment for exercising.
D. To find a person to exercise together.
4. The subject discussed in Paragraphs 2-3 is that _____.
A. it is not good for you to exercise too much
B. it is helpful to lose weight by exercise
C. it is a good thing to exercise every day
D. it is good for your pet to exercise every day
完形填空。
     The tiny snow leopard cub (雪豹仔) looked across the mountainside for its mother, waiting for her to
return. She never did. The cub"s mother was   1  , likely killed by a hunter in the steep mountain of Pakistan.
Her cub was   2   and alone-without care it was doomed (注定) to starve. 
       3   a passing herder (牧人) noticed the tiny cub. He took the   4   home and raised it. At first the cub
seemed fine.   5   after a week, the herder   6   the snow leopard baby wasn"t healthy and that he didn"t know
   7   to feed it. He sent word to wildlife officials, hoping   8   would arrive in time.
     As soon as the World Wide Fund for nature Pakistan (WWF-P) in the city of Gilgit   9   about the cub,
they sent a staffer to the remote village. The  10  was more urgent than just one animal in danger; snow leopards
are endangered species.  11  being hunted for their beautiful thick coats, the wild cats have  12  much of their 
 13  prey, such as wild mountain goats and sheep, to hunt. The world population of snow leopards in their
natural habitat-high mountain in central Aisa-has  14  between 4,500 and 7,000. In Pakistan only about 300 are
  15 . The people at the WWR-P didn"t want to lose  16 .
     They loaded the snow leopard into a card board box lined with a towel and grass and drove it to Gilgit for
a veterinary (兽医的) exam.  17  the cub was weak, he had no diseases or infections. The vet felt he would
  18  with proper care. But since a snow leopard learns survival  19  like hunting from its mother, the cub could
never be set free back into the  20  He was sent to a national park and placed in the care of wildlife keeper who
often raised wild baby animals.
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(     )1.A. died           
(     )2.A. helpless       
(     )3.A. suddenly       
(     )4.A. wild animals   
(     )5.A. Thus           
(     )6.A. realized       
(     )7.A. where         
(     )8.A. food           
(     )9.A. heard          
(     )10.A. preparation   
(     )11.A. In addition to
(     )12.A. found         
(     )13.A. lovely        
(     )14.A. dated from    
(     )15.A. 1eft          
(     )16.A. the other     
(     )17.A. Although      
(     )18.A. survive       
(     )19.A. methods       
(     )20.A. zoos          
B. gone          
B. unforgettable 
B. Immediately   
B. sheep         
B. And           
B. recognized    
B. when          
B. money         
B. worried       
B. concern       
B. Except for    
B. searched      
B. natural       
B. added up to   
B. remained      
B. others        
B. Since         
B. die           
B. approaches      
B. air           
C. lost           
C. hopeful        
C. Unfortunately  
C. baby leopard   
C. But            
C. suggested      
C. what           
C. help           
C. talked         
C. research       
C. As for         
C. lost           
C. favorite     
C. dropped to     
C. lived          
C. the others     
C. Now that       
C. feed           
C. techniques      
C. wild         
D. passed        
D. useless       
D. Luckily       
D. goat          
D. Instead       
D. imagined      
D. how           
D. care          
D. looked        
D. situation     
D. Because of    
D. gained        
D. lucky         
D. looked back to           
D. existed       
D. another       
D. If            
D. supply        
D. skills        
D. parks         
阅读理解。
     Residents of Golestan Province in northern Iran have one of the highest rates of esophageal cancer (食道
癌) in the world. They don"t drink alcohol or smoke-the two primary risk factors for the disease in the west-
but they do consume tea, nearly 1.2 liters per day, on average. So local researchers set out looking for a
connection.
     They employed 300 esophageal cancer patients who were diagnosed in the eastern part of Golestan and
matched them up with 571 healthy controls who shared their age, gender and place of residence. All but one
of them drank tea, and they gave interviewers information about their tea consumption and brewing habits.
     Teaming up with investigators from the U.S., England, France and Sweden, the researchers calculated
that people who said they drank "hot" tea (149 to 156 degrees Fahrenheit) were more than twice as likely to
develop esophageal cancer as people who said they drank the beverage "warm" or "lukewarm" (less than 140
degrees). Those who said they took their tea"very hot" (at least 158 degrees) were more than eight times as
likely to get esophageal cancer, according to the study, published online Thursday in the British Medical
Journal.
     The scientists have now connected it with esophageal cancer. The problem doesn"t appear to be the tea
itself, but the temperature at which it is consumed, their study found.
     The researchers also asked people how long they waited to drink their tea after pouring it. Those who
said they waited two to three minutes were nearly 2.5 times more likely to develop the cancer compared
with people who said they waited at least four minutes. Impatient tea drinkers who waited less than two
minutes were 5.4 times as likely to be diagnosed with esophageal cancer, the study found.
     The study didn"t assess the mechanism linking hot tea to esophageal cancer, but the researchers said
the temperature of the liquid was almost certainly to blame rather than the compounds in the tea itself.
1. According to the passage, _____ were thought to be two main causes of esophageal cancer.
A. drinking hot tea and smoking
B. drinking alcohol and smoking
C. working in the kitchen and smoking
D. taking sunbaths and drinking alcohol
2. The underlined word "it" in Paragraph 4 probably refers to _____.
A. the tea they drink
B. the way people drink tea
C. the temperature of the tea
D. the properties of the tea
3. We can infer from the second paragraph that _____.
A. drinking tea causes the cancer
B. few people drink tea in that area
C. 300 out of 571 people got the cancer
D. tea has no direct connection with the cancer
4. Which would be the best title for this passage?
A. Drinking Tea with Patience
B. An Esophageal Cancer Stricken Area
C. Temperature and Esophageal Cancer
D. Various Causes of Cancer