阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

Usually, when we talk about reading, we think of using our eyes 【小题1】 (see) letters written in ink on paper. 【小题2】 , this is not always true. For example, blind people cannot see, but they can still read books.

The man 【小题3】(introduce) blind people to reading was Louis Braille. Braille lost his eyesight at the age of three as a result of 【小题4】 injury. When he was ten, he went to a school for the blind in Paris.

In 1821, a soldier visited the school and showed the students a system for passing 【小题5】 (message) at night during times of battle. His system used paper with small, raised dots 【小题6】 could be felt with the fingers. Each letter of the alphabet was represented by a different pattern which 【小题7】(make) up of twelve dots. While the students found the soldier’s idea interesting, the system was too difficult to be 【小题8】 practical use. But young Louis Braille took the idea and worked on it. At the age of fifteen, he created a system --“Braille.”

The blind can 【小题9】 (easy) recognize Braille with the fingers. Today, 【小题10】 is the most common system for them to read and write.