What impressed me most in his report lies in the words to bring about an _________ of the     conditions of the working men and women．

  A．improvement    B．a(chǎn)dvance    C．increase     D．a(chǎn)chievement

 Teachers’ advice of ______ stress over the school days must be granted by the headmaster.

A. students to reduce            B. students reducing

C. students reduced        D. students being reduced

. – Do you think Linda will be fired this week?

 – The question is not worth discussing. I think the manager has _____.

A.    made an impression on her                       B. made contact with her

C. made up his mind about it                      D. made his fortune from it

　　Decision-thinking is not unlike. It often matters not only what you think, but also what others think you think and what you think they think you think. The mental process（過程） is similar. Naturally, this card game has often been of considerable interest to people who are, by any standards, good thinkers.

　　The great mathematician John von Neumann was one of the founders of game theory. In particular, he showed that all games fall into two classes; there are what he called games of 'perfect information', games like chess where the players can't hide anything or play tricks; they don't win by chance, but by means of logic and skills. Then there are games of 'imperfect information', like poker, in which it is impossible to know in advance that one course of action is better than another.

　　One mistaken idea about business is that it can be treated as a game of perfect information. Quite the reverse, business and life itself are games which we must normally play with very imperfect information. Business decisions are often made with many unknown and unknowable factors（因素）, as best poker players. But few business people find it comfortable to admit that they are taking a chance, and many still prefer to believe that they are playing chess, not poker.

49．The subject discussed in this text is _________.

　　A．the process of reaching decisions

　　B．the difference between poker and chess.

　　C．the secret of making good business plans

　　D．the value of information in winning games

50．An important factor in a game of imperfect information is ___________.

　　A．rules               B．luck        C．time               D．ideas

51．Which of the following can be used in place of "Quite the reverse"?

　　A．Quite right.                   B．True enough.

　　C．Most unlikely.                      D．Just the opposite.

52．In the writer's opinion, when making business decisions one should ___________ .

　　A．put perfect information before imperfect information

　　B．a(chǎn)ccept the existence of unknown factors

　　C．regard business as a game of chess

　　D．mix known and unknown factors

Mary had promised to give me a ticket for tomorrow. She failed, ____.

A. either       B. though        C. but       D. too

Our school have planted different kinds of trees and flowers, _____ a beautiful and peaceful  

   environment for students..

  A. create          B. creating         C. to create     D. created

May I have you attention please? I have a little things to tell you. When you have a class here in the language lab, please be here a little early. Change your shoes before enter the lab. Don't bring anything here except your text books. When you are into, please don't touch these machine without permission. Always do as the teacher tell you to. In class you should only speak the English, not Chinese. Recorders can be used make a copy of the listening materials. When class over, turn off your machines and leave the lab one by one.             

I often quarrel about my mother over whether I can watch TV after school. She holds view that senior three students have to make fully use of every minute to work hard at their lessons. It seems to me that once I am allowed to do that, I’ll unable to control myself and forget all about my study. She also thinks it is bad for my eye. But I really can’t accept her ideas. In my opinion, watch TV can set my mind at rest after a day’s hard works. Besides, it is important for us to know what had happened at home and at abroad. Thus, we shouldn’t be forbidden to watch TV.

Many a student ____ going to have themselves ______ in the hospital.

A, is ; to examine              B. are ; examine                C. is ; examined        D. are ; examining

---what was the party like?

   ---Wonderful. It’s years _____ I enjoyed myself much.

      A. after     B. before      C .that      D. sinc