In Renee Smith's classroom, attendance is up. Trips to the headmaster's office are down and students are handing in assignments on time. The Springfield High School teacher says she has seen great __1__  since adding a few new students to her class―five Labrador puppies and their father.

      The seven __2__ students in Smith's class have a history of discipline __3__. But since they've started teaching the dogs obedience (顺从), their own __4__ has improved. A dog trainer Chuck Reynolds __5__ the students a new trick each week that they then work on with the puppies. At night, the dogs go home with the staff members who have raised them. They get dropped off in the morning, __6__ a parent would take a child to day care.

Smith said she came up with the idea when her dog had puppies and she say, how __7__ her own children responded to them. She consulted with school psychologist Kristin Edinger, __8__ they took the idea―along with letters from students __9__ the program ―to the school board. A pet therapist said, "What you are trying to teach is __10__ and that there are consequences for the decisions you make."

A. disappointment       B. progress     C. disturbance D. promotion

A. human    B. dog           C. new          D. Labrador

A. problems       B. questions  C. issues        D. troubles

A. habit      B. attitude      C. action        D. behavior

A. guides   B. teaches      C. permits      D. aids

A. such as  B. much as     C. so that       D. even if

A. well       B. quickly      C. poorly       D. carelessly

A. but         B. so.            C. and           D. because

A. revising                B. describing C. opposing                 D. supporting

A. self-importance    B. self-respect C. self-control              D. self-criticism

In 1982, Steven Callahan was crossing the Atlantic alone in his sailboat when it struck something and sank. He was out of the sailing track and floating in a lifeboat, alone. His supplies were  36 . His chances of surviving were small.  37 when three fishermen found him seventy-six days later, he was alive — much  38 than he was when he started, but alive.
His  39 of how he survived is interesting and attractive. His subtle act — how he  40 to catch fish, how he evaporated sea water to 41 fresh water — is very interesting. But the thing that  42 my eye was how he managed to keep himself going when all hope seemed lost, when it seemed no  43  continuing the struggle, when he was  44  greatly, when his lifeboat was pierced and after more than a week’s struggling with his weak body. He was starved and  45  exhausted. Giving up would have seemed the only sensible choice.
When people  46 these kinds of circumstances, they do something with their minds that gives them the courage to keep going. Many people in  47 dangerous circumstances give in or go mad. Something the survivors do with their thoughts helps them find the courage to carry on  48 major difficulties.
"I tell myself I can  49 it," wrote Callahan in his book. "Compared to what others have been through, I'm fortunate. I tell myself these things over and over,  50  courage and strength."
I wrote that down after I read it  51 it struck me as something important. And I've told myself the same thing when my own goals seemed 52 off or when my problems seemed too powerful. And every time I've said it, I have always come back to my senses.
The truth is, our circumstances are only bad  53 to something better. But others have been through much worse, that is, in comparison with what  54 have been through, you're fortunate. Tell this to yourself over and over again, and it will help you  55 the rough spots with a little more perseverance(毅力) .

In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural   36  seemed to be unlimited.
Today things are   37  . The world has become too   38  . We are   39  our natural resources too quickly, and at the same time we are   40  our environment with dangerous chemicals. If we   41  to do this, human life on earth will not   42 .
People realize today that if too many   43  are taken from the sea, there will soon be none left. Yet, with modern fishing   44  , more and more fish are caught.
We know that if too many trees are cut down,   45  will disappear and nothing will  46  on the land. Yet, we continue to use bigger and more powerful machines to   47  more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.   48  , in most countries waste products are still put into rivers or into the sea, and there are few laws to   49  this.
We also know that if the   50  of the world continues to rise at the present rate, in a few years, there won't be enough food. What can we do to solve the   51  ? If we eat more vegetables and less   52  , there will be more food available for everyone. Land that is used to grow crops feeds five times more people than land where animals are kept.
Our natural resources will   53   longer if we learn to recycle them. The world population will not   54  so quickly if people use modern methods of birth control.
Finally, if we   55  people to think about the problems we shall have a better and cleaner planet in the future.

In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be____36____ .
Today things are___37_____, the world has become too___38____ . We are using up our natural resources too quickly, and at the same time we are___39____ our environment with dangerous chemicals. If we continue to do this, human life on the earth ___40____survive.
Everyone___41_____ today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing__42_____ , more and more fish are caught. We know that if too many trees are cut down, ___43____will disappear and nothing will grow on the land. Yet, we ___44_____to use bigger and more powerful machines to __45____more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.___46_____, in most countries wastes are ___47______put into rivers or into the sea, and there are _48_____laws to stop this.
We know, too, that if the___49____ of the world continues to rise at the present rate, in a few years, there will not be enough___50_____. What can we do to solve these problems ?
It we eat more vegetables and less___51____, there will be more food available for everyone. Land that is used to grow crops __52_____five times more people than land where animals are kept.
Our natural resources will _53_____longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth__54_______ .
Finally, if we educate people to think about the problems, we shall have a better and clearer ___55____in the future.

In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be____36____ .
Today things are___37_____, the world has become too___38____ . We are using up our natural resources too quickly, and at the same time we are___39____ our environment with dangerous chemicals. If we continue to do this, human life on the earth ___40____survive.
Everyone___41_____ today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing__42_____ , more and more fish are caught. We know that if too many trees are cut down, ___43____will disappear and nothing will grow on the land. Yet, we ___44_____to use bigger and more powerful machines to __45____more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.___46_____, in most countries wastes are ___47______put into rivers or into the sea, and there are _48_____laws to stop this.
We know, too, that if the___49____ of the world continues to rise at the present rate, in a few years, there will not be enough___50_____. What can we do to solve these problems ?
It we eat more vegetables and less___51____, there will be more food available for everyone. Land that is used to grow crops __52_____five times more people than land where animals are kept.
Our natural resources will _53_____longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth__54_______ .
Finally, if we educate people to think about the problems, we shall have a better and clearer ___55____in the future.