【单选题】

{{I}}Complete the notes below.Write {{B}}NO MORE、THAN THREE、WORDS or

A、NUMBER {{/B}}for each answer. {{/I}} {{B}}{{U}}Braille-a system of writing for the blind{{/U}}{{/B}}LouisBraille was blinded as a child in his {{B}}21{{/B}} ........................ Braille invented the writing system in the year {{B}}22{{/B}} ...................... An early writing system for the blind used embossed letters.
A、military system using dots was called {{B}}23{{/B}} ........................ When was theBraille system officially adopted
A、as soon as it was inventedB、two years after it was inventedC、after LouisBraille had died