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（过程） 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．accept the existence of unknown factors
　　C．regard business as a game of chess
　　D．mix known and unknown factors

　　此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾（ √ ）；如有错误（每行只有一个错误），则按下列情况改正：
　　此行多一个词：把多余的词用斜线（）划掉，在该行右边横线上写出该词，并也用斜线划掉。
　　此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。
　　此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
　　注意：原行没有错的不要改。
　　After I finished the school this year, I began 　　　　　【小题1】__________
　　to look for work. Now several month later, I still　　　　【小题2】__________
　　hadn‘t found the job that I was interested. Last Sunday　【小题3】__________
　　morning I received a phone call from a man calling him  【小题4】_________
　　Mr Smith. He said to me on the phone, "I hear that you do 【小题5】__________
　　very well in your studies. I may have a job for you." 　 【小题6】__________
　　I entered his office with a beaten heart. How I hoped　　【小题7】_________
　　that I will go through the job-hunting talk today and he 　【小题8】___________
　　would take me on as a lab assistant. But to my surprised, 　【小题9】___________
what he said disappointing. He only needed a model.　　【小题10】___________

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

　　 It is a new term in today's tourism industry．But in an age of growing environmental awareness, it is not too difficult for us to imagine and understand this new form of holiday．

　　Ecotourism, which is considered as a kind of responsible tourism, is typically defined（定义）as travel to places where special and unusual plants, animals and cultural heritages （遗产） are the main ttractions．  Therefore, programs concerning the protection of some natural and cultural spots also form'a part of ecotourism．　　Ecotourism is developing at great speed．According to a recent report by the World Tourism Organization, ecotourism in recent years has enjoyed an annual growth of about 5% worldwide．   They include bird watching, hiking, diving, photography and taking part in various kinds of local cultural events．　　  However, it looks like some smaller towns and country areas may well become the new destinations for people to visit tomorrow because they are rich in ecological, cultural and historical resources （资源）．

　　Ecotourism has been gaining increasing recognition and popularity mainly for the relaxing, natural and vivid experience it offers to tourists．People are attracted to nature  and long to be close to it．However, a conflict between nature and human beings is unavoidable． 

　　A．The definition of ecotourism is beyond words．

　　B．It takes ecology and culture into consideration．

　　C．You may not be very familiar with "ecotourism"．

　　D．More than 80 activities have been listed for ecotourism．

　　E．People can have great fun enjoying nature through ecotourism．

　　F．Big cities are still the major places that attract tourists in our society today．

　　G．How to protect natural resources while taking advantage of them is of great importance．

    The school year has fallen by nearly six weeks, from 197 days in 1964 to 156days in 1994,   1   the National Association of Scholars.   2  , most American kindergarten, elementary (初等的) and high school students are   3  to spend 180 days a year in their schools. The   4  of the average class period also has   5   , from more than 57minutes to less than 54,the Association reports.

    “The   6  has to be that students are simply   7  less,” said the director of the Association. “If you count the actual    8  of contact hours, you'll find they are   9   four years in college getting an education that would have taken about    10  years in 1964.”

The universities argue (认为) that they are simply teaching more  11　　 “The traditional idea that learning   12  in the classroom and   13  reading and writing   14  based on seat time is out of date,” said a spokesman for the American Council on Education. “  15  than attending lectures, students now   16  their professors on their computers or use other types of   17  technology, allowing for a shorter school year,” he said. It is very   18  .that, in many schools, they are going to spend   19  time   20  than they used to.

1. A. according to　　  　　  B. by the accordance of  　　 C. following  　　     D. followed

2. A. By comparison  　　　　  B. In particular 　　　　    　　C. Strangely enough  D. As a result

3. A. intended   　　　　  　　B. required 　　　　   　　　　C. requested   　　  D. inquired

4. A. long    　　　　　　　　　　 　　B. length　　　　 　　   　　C. time   　　  　　  D. period

5. A. fallen   　　    　　　　B. declined 　　　　   　　　　C. oppressed   　　  D. lowered

6. A. reason　　 　　　　 　　B. cause    　　　　 　　　　C. conclusion 　　   　　  D. condition

7. A. playing   　　　　    　　B. learning  　　　　  　　　　C. working　　 　　  D. paying

8. A. number　　 　　　　B. times  　　  　　　　　　C. need  　　　　　　    D. arrangement

9. A. spending      　　　　B. given  　　  　　　　　　C. living  　　　　  D. asked

10. A. five　　    　　  　　B. two   　　  　　　　　　C. three 　　   　　  D. six

11. A. quickly   　　　　  　　B. thoroughly  　　　　　　　　   C. wisely   　　　　    D. efficiently

12. A. came　　   　　  　　B. took place　　　　  　　    C. started 　　  　　  D. appeared

13. A. through    　　    　　B. across   　　　　  　　　　C. by the way of     D. with

14. A. questions        　　B. books   　　　　  　　　　C. assignments       D. texts

15. A. Rather  　　  　　　　B. More　　  　　  　　　　C. Less   　　 　　  D. Easier

16. A. chat with    　　 　　B. argue with  　　　　　　 　　C. speak       　　  D. tell

17. A. knowledge  　　   　　B. information   　　　　  　　C. message  　　      D. intelligence

18. A. possibly     　　　　B. probably  　　    　　　　C. lovely      　　  D. likely

19. A. less　　     　　　　B. little　　 　　　　  　　　　C. more　　 　　      D. much more

20. A. at home　　　　    B. in the laboratory 　　　　     C. in the classroom  D. on computer