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

The man     3    (introduce) blind people to reading was Louis Braille. Braille lost his eyesight at the age of three as a result of     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     5     (message) at night during times of battle. His system used paper with small, raised dots     6     could be felt with the fingers. Each letter of the alphabet was represented by a different pattern which     7    (make) up of twelve dots. While the students found the soldier’s idea interesting, the system was too difficult to be     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     9     (easy) recognize Braille with the fingers. Today,     10     is the most common system for them to read and write.