B

       In February 2006, Lydia Angyiou and her two sons were walking through their village in northern Canada．The sound of children shouting made her turn around．To her horror, Lydia saw  a 700-pound polar bear behind her eyeing her seven-year-old son．Getting between the bear and her child, Lydia yelled at the children to run away．She then began hitting and kicking the animal as hard as she could．A neighbor who heard all the noise came and shot the bear．But everyone agreed it was Lydia who had saved her children's lives．A local policeman described it this way: "…I guess when your back is up against the wall, …we come up with super-human strength．"

       Where does this "super-human strength" , courage and quick thinking come from? Experts say it comes from stress! In stressful situations, the body releases chemicals that prepare it to take action．These chemicals give people the speed and strength they need to fight danger or run away from it．

       When we think of stress, we usually think of its negative effects．Studies, though, show that moderate levels of stress are actually helpful．In fact, the way we perform is usually affected by the amount of stress we feel．

       Stress causes the brain to release adrenaline （肾上腺素） which in turn increases our energy and excitement．The chemical gives us clearer minds and helps us to do more．This is why some people say they work better under a deadline．

       Adrenaline that is not released for long periods of time can cause us to increase and strengthen our abilities instead of weakening them．We sometimes turn out our very best work when we push ourselves to the limit．Stress can also make us more confident．Handling small amounts of stress now prepares us for handling serious situations in the future．Who knows? Today's stress may even prepare for the next polar bear that comes along!

55．In the first paragraph, the case of Lydia Angyiou is mentioned to ______．

       A．introduce the topic to be followed

       B．praise Lydia Angyiou for her bravery

       C．remind us of the unexpected danger of life

       D．show the importance of super-human strength

56．What does the policeman probably mean by saying "your back is up against the wall"?

       A．You are helped．            B．You are inspired．

       C．You are confident．          D．You are cornered．

57．What would be the best title for the passage?

       A．Brave Mother          B．The Cause of Stress

C．The Benefit of Stress    D．Super-human Strength

A dam is a man-made structure built across a river. Most dams are built to control a river’s water flow, improve navigation and control flooding. However, some dams are built to produce hydro-electric power.

Hydro-electric power is produced as water passes through a dam, and into a river below. The more water that passes through a dam, the more energy is produced. Once a dam is built, a man-made lake is created behind the dam.

Electricity is produced by a kind of equipment called a turbine(水轮机). Turbines contain metal coils(线圈) surrounded by magnets(磁铁). When the magnets move round rapidly over the metal coils, electricity is produced. Turbines are located inside dams. The falling water makes the magnets go around the coils.

Dams provide clean energy, but they can also harm the environment. Species that use rivers to reproduce are often hurt by dams. In the Northwest of the US, the population of fishes has dropped from 16 million to 2.5 million since hydro-electric plants were built on the Columbia River. Dams all over the world have hurt some species. 

  The highest dam in the Unites States is located near Oroville, California. The Oroville Dam towers 230 meters and is more than a mile wide. This dam was built in 1968, 22 years after the Hoover Dam. The Hoover Dam, on the Nevada-Arizona border controls the Colorado river. It is 221 meters high and has 2.6 million hectare-meters of water.

The highest dam in the world is the Nurek Dam on the Vakhsh River in Tadzikistan, a country in central Asia. This dam is 300 meters tall. 

Which of the following statements is NOT true according to the passage?              

A. Some dams are built for controlling a river’s water flow.

B. Hydro-electric power is usually produced through a dam.

C. Dams can offer energy and they are harmless to the environment.

D. Generally speaking, where there is a dam, there is a man-made lake.

The third paragraph mainly tells us _____.                          

  A. how hydro-electric power is produced

  B. What a turbine is and how it works 

  C. how the magnets and the metal coils work

  D. how the falling water passes through a turbine                     

The dam which controls the Colorado river is ____.                  

A. the Oroville Dam  B. the Hoover Dam  C. the Nurek Dam  D. the Vakhsh Dam

A dam is a man-made structure built across a river. Most dams are built to control a river’s water flow, improve navigation and control flooding. However, some dams are built to produce hydro-electric power.

Hydro-electric power is produced as water passes through a dam, and into a river below. The more water that passes through a dam, the more energy is produced. Once a dam is built, a man-made lake is created behind the dam.

Electricity is produced by a kind of equipment called a turbine(水轮机). Turbines contain metal coils(线圈) surrounded by magnets(磁铁). When the magnets move round rapidly over the metal coils, electricity is produced. Turbines are located inside dams. The falling water makes the magnets go around the coils.

Dams provide clean energy, but they can also harm the environment. Species that use rivers to reproduce are often hurt by dams. In the Northwest of the US, the population of fishes has dropped from 16 million to 2.5 million since hydro-electric plants were built on the Columbia River. Dams all over the world have hurt some species. 

  The highest dam in the Unites States is located near Oroville, California. The Oroville Dam towers 230 meters and is more than a mile wide. This dam was built in 1968, 22 years after the Hoover Dam. The Hoover Dam, on the Nevada-Arizona border controls the Colorado river. It is 221 meters high and has 2.6 million hectare-meters of water.

The highest dam in the world is the Nurek Dam on the Vakhsh River in Tadzikistan, a country in central Asia. This dam is 300 meters tall. 

Which of the following statements is NOT true according to the passage?              

A. Some dams are built for controlling a river’s water flow.

B. Hydro-electric power is usually produced through a dam.

C. Dams can offer energy and they are harmless to the environment.

D. Generally speaking, where there is a dam, there is a man-made lake.

The third paragraph mainly tells us _____.       56-60 ADB                    

  A. how hydro-electric power is produced

  B. What a turbine is and how it works 

  C. how the magnets and the metal coils work

  D. how the falling water passes through a turbine                     

The dam which controls the Colorado river is ____.                  

A. the Oroville Dam  B. the Hoover Dam  C. the Nurek Dam  D. the Vakhsh Dam

A young man was one day taking a walk with a professor. As they went along, they saw   36  in the path a pair of old shoes. They guessed the shoes belonged to a poor man who had   37  finished his day’s work in a field close by.
　　The student   38  the professor, saying, “Let’s play the man a(n)   39 : we will hide his shoes, and we stay behind those bushes to see his   40  when he cannot find them.”
　　“My young friend,” answered the professor, “we should never   41  ourselves in that way. You are   42 , and may give yourself a greater pleasure by helping the poor man. Perhaps we put a   43  into each shoe, and watch his reaction.”
　　The student did so, and they both   44  themselves behind the bushes. The poor man soon finished his work, and came   45  the field to the path where he had left his coat and shoes. While   46  his coat he slipped his foot into one of his shoes; but feeling something   47 , he bent down to feel what it was, and found the coin.
He was   48 , and looked at the coin again and again. He then looked around   49  on all sides, but no person was to be seen. He now put the money into his pocket, and began to put on the other shoe; but his surprise was   50  on finding the other coin.
　　His feelings overcame him; he fell upon his   51 , looked up to heaven and preyed, He spoke of his wife, sick and   52 , and his children without bread. The timely giving, from some unknown hand, would   53  from dying.
　　The student was moved and his eyes filled with tears. “Now,” said the professor, “are you not much better pleased than if you had played your   54  trick?”
The youth replied, “Thank you! Sir! I feel now the   55  of those words, which I never understood before: ‘It is more blessed to give than to receive.’

【小题18】

A．support B．learn C．treat D．save

A few weeks after my first wife, Georgia, was called to heaven, I was cooking dinner for my son and myself. For a   16 , I had decided on frozen peas. As I was cutting open the bag, it   17  from my hand and crashed to the floor. The peas, like marbles,   18  everywhere. I tried to use a broom,   19  with each swipe they just rolled across the kitchen．
For the next week, every time I was in the   20 , I found a pea---in a corner, or behind a table leg. They kept   21 . Eight months later I pulled out the refrigerator to clean behind it, and   22  12 frozen peas hidden underneath．
At the time I found those few remaining   23 , I was in a new relationship with a wonderful   24  I’d met in a support group. After we married, I was reminded 25  those peas under the refrigerator, and realized that my   26  had been like that bag of frozen peas. It had shattered（破碎. My wife had died; I was in a new city with a busy job, and with a son having trouble   27  his new surroundings and the  28  of his mother. I was a bag of spilled frozen peas; my life had come apart and scattered．
When life gets you   29 , when everything you know comes apart, and when you think you’ll never  30 , remember that it’s just a bag of scattered frozen peas. The peas can be  31 , and life will move on. You’ll find all the peas   32 , including the ones that are hardest to find. And when you’ve got them   33  you’ll start to feel whole again．
The life you know can break apart at any time. But you’ll have to   34 , and how fast you collect your peas depends on you. Will you keep scattering them around with a broom,  35  will you pick them up one by one and put your life back together?