41．The most dangerous and costly stunts can be done by________．
　　A．using computer graphics only
　　B．mixing computer graphics and live action
　　C．improving the effects of real stunts
　　D．increasing the number of the stunt people
　　42．The stunt people are losing their jobs because of_________
　　A．the speed in making movies
　　B．the cost in making movies
　　C．the insurance of movies
　　D．the visual effects of the real stunts
　　43．The word“cover”(Line 3，Para．3)is closest in meaning to________
　　A．refuse
　　B．insure
　　C．sell
　　D．help
　　44．Which of the following is TRUE according to the passage?
　　A．Computers will surely make stunt people lose jobs．
　　B．The stunt people should blame on the use of computer in making stunts．
　　C．Computers make the job of the stunt people more challengin9．
　　D．Audiences are losing interest in the stunt people．
　　45．The purpose of this passage is to________
　　A．promote the use of real stunts in the film-making
　　B．describe the working scenes of the stunt people
　　C．recommend jobs to the stunt people
　　D．introduce the difficult situation of the stunt people at work