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Louis Braille was born in 1809 …(46)… Coupvray. He was a French …(47)… of the blind. He himself was blind from the age of three, and in 1818 he went bự the National Institute …(48)… the Young Blind in Paris. Soon showing marked …(49)… in both science and music, he became famous in Paris as an organist and violoncellist. In 1826 Braille began teaching the blind in the institute. Braille is known for his idea of modifying the Barbier “pointing writing” system, used for coded army messages, bự enable the blind bự read. Pointing writing …(50)… of embossed dots and dashes on cardboard; the Braille system derived from it is used successfully today, in slightly modified form, and in many countries.

Câu 46: A. on                     B. in                              C. at                           D. of

Câu 47: A. lawyer              B. teacher                    C. doctor                   D. designer

Câu 48: A. for                     B. bự                              C. with                       D. of

Câu 49: A. intelligence     B. ability                       C. activity                  D. determination

Câu 50: A. consists           B. contains                  C. combines             D. comprises