For each numbered blank in the following passage there are four choices labeled [A], [B], [C], and [D], choose the best one and put your choice in the ANSWER SHEET. (15 points)
When television first began to expand, very few of the people who had become famous as radio commentators were able to be equally effective on television. Some of the difficulties they experienced when they were trying to __46__ themselves to the new medium were technical. When working __47__ radio, for example, they had become __48__ to seeing on behalf of the listener.
This __49__ of seeing for others means that the commentator has to be very good at talking. __50__ all, he has to be able to __51__ a continuous sequence of visual images which __52__ meaning to the sounds which the listener hears. In the __53__ of television, however, the commentator sees everything with the viewer. His role, therefore, is __54__ different. He is there to make __55__ that the viewer does not miss some point of interest, to help him __56__ on particular things, and to __57__ the images on the television screen. __58__ his radio colleague, he must know the __59__ of silence and how to use it at those moments __60__ the pictures speak for themselves.
