Part II Cloze

　　When television first began to expand, very few of the people who had become famous as __31__ announcers were able to be equally effective __32__ television. Some of the difficulties they experienced when they were trying to __33__ themselves to the new medium were technical. When __34__ on radio, for example, they had become __35__ to seeing on behalf of the listener. This art of seeing for others __36__ that the announcer has to be very good __37__ talking. Above all, he has to be able to __38__ a continuous sequence (序列) of visual (视觉的) images which add meaning __39__ the round the listener hears. In the __40__ of television, however, the announcer sees __41__ with the viewer. His duty, __42__, is completely different. He is there to make __43__ that the viewer does not __44__ any point of interest, to help him focus __45__ particular things, and to help him __46__ the images on the television screen. __47__ his radio colleague, he must know the __48__ of silence and how to use it at those __49__ when the pictures speak for __50__.

　　31.A) television B) advertisement C) radio D) newspaper(C)

　　32.A) of B) in C) at D) on(D)

　　33.A) adopt B) adjust C) alter D) adapt(B)

　　34.A) working B) listening C) appearing D) showing(A)

　　35.A) practiced B) experienced C) determined D) used(D)

　　36.A) guarantees B) means C) convinces D) warns(B)

　　37.A) at B) with C) in D) of(A)

　　38.A) reflect B) create C) cause D) affect(B)

　　39.A) to B) in C) on D) about(A)

　　40.A) occasion B) matter C) example D) case(D)

　　41.A) something B) everything C) nothing D) anything(B)

　　42.A) moreover B) therefore C) furthermore D) nevertheless(B)

　　43.A) clear B) definite C) sure D) easy(C)

　　44.A) miss B) ignore C) drop D) catch(A)

　　45.A) to B) at C) in D) on(D)

　　46.A) reveal B) expose C) understand D) translate(C)

　　47.A) Unlike B) Besides C) Like D) As(A)

　　48.A) price B) cost C) value D) worth(C)

　　49.A) minutes B) periods C) times D) moments(D)

　　50.A) them B) him C) themselves D) himself(C)