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听力原文: Beethoven was born in 1770. He studied first with his father. At 12 he had some
1802, however, was a year of crisis for Beethoven, with his realization that the impaired hearing he had noticed for some time was incurable and sure to worsen. But he came through with his determination strengthened and entered a new creative phase, generally called his middle period. It is characterized by a heroic tone, evident in the Eroica Symphony, in Symphony No.5, and in his opera Fidelio. (18[A]) With his powerful middle-period works Beethoven was firmly established as the greatest composer of his time.
The years after 1812 were relatively unproductive. (19[D]) He was seriously depressed, by his deafness and the resulting isolation and by the failure of his romantic relationships. But he came out of these trials to write hi s profoundest music, which surely reflects something of what he had been through. (20[C]) For Beethoven, the act of composition had always been a struggle; in the late works the sense of agonizing effort is a part of the music.
Beethoven established himself as the greatest composer ______.
A.with his powerful middle-period works
B.when his first three piano concertos were finished
C.around 1802
D.around 1795