Questions 46 to 50 are based on the following passage：

　　Sport is heading for an indissoluble marriage with television and the passive spectator will enjoy a private paradise. All of this will be in the future of sport. The spectator（the television audience）will be the priority and professional clubs will have to readjust their structures to adapt to the new reality:sport as a business.

　　The new technologies will mean that spectators will no longer have to wait for broadcasts by the conventional channels.They will be the ones who decide what to see. And they will have to pay for it. In the United States the system of the future has already started:pay-as-you-view. Everything will be offered by television and the spectator will only have to choose. The review Sports Illustrated recently published a full profile of the life of the supporter at home in the middle of the next century. It explained that the consumers would be able to select their view of the match on a gigantic,flat screen occupying the whole of one wall,with images of a clarity which cannot be foreseen at present;they could watch from the trainer's stands just behind the batter in a game of baseball or from the helmet of the star player in an American football game. And at their disposal will be the sane option s the producer of the recorded programmer has to select replays,to choose which camera to me and to decide on the sound whether to hear the public,the players,the trainer and so on.

　　Many sports executives,largely too old and too conservative to feel at home with the new technologies will believe that sport must control the expansion of television coverage in order to survive and ensure that spectators attend matches. They do not even accept the evidence which contradicts their view while there is more basketball than ever on television， for example,it is also certain that basketball is more popular than ever.

　　It is also the argument of these sports executives that television harming the modest team.This is true,but the future of those teams is also modest.They have reached their ceiling.It is the law of the market.The great events continually attract larger audience.

　　The world I being constructed on new technologies so that people can make the utmost use of their time and,in their home have access to the greatest possible range of recreational activities. Sport will have to adapt itself to the new world.

　　The most visionary executives go further. That philosophy is:rather than see television take over sport why not have sports taken over television？

　　46.What does the writer mean by use of the phrase an indissoluble marriage in the first paragraph？

　　A.sport is combined with television.

　　B.sport controls television.

　　C.television dictates sports.

　　D.Sport and television will go their own ways

　　47.What does they in line 2 paragraph 2 stand for？

　　A.Broadcasts.

　　B.Channels.

　　C.Spectators.

　　D.Technologies.

　　48.How do many sports executives feel with the new technologies？

　　A.they are too old to do anything.

　　B.They feel ill at ease.

　　C.They feel completely at home.

　　D.Technologies can go hand in hand with sports.

　　49.What is going to be discussed in the following paragraphs？

　　A.the philosophy of visionary executives.

　　B.The process of television taking over sport.

　　C.Television coverage expansion.

　　D.An example to show how sport has taken over television.

　　50.What might be the appropriate title of this passage？

　　A.the arguments of sports executives.

　　B.The philosophy of visionary executives.

　　C.Sports and television in the 21st century.

　　D.Sports:a business.