【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}} ........................ What can the combined dots represent
A、both letters and wordsB、only individual wordsC、only letters of the alphabet