单项选择题

How did Braille make use of raised dots in his code

A．He used them for the 26 letters of the alphabet.
B．He used them for pictures.
C．He used them for punctuation marks and short words.
D．Both A and C.
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单项选择题
What kind of books did Braille's teacher use
A．Ones with cloth letters.
B．Ones with printed letters sticking out from the pages.
C．Ones with dots standing for letters.
D．Ones with thick paper punched with an awl.
单项选择题
What happened to Senator Stems could happen to ______.
A．other old men
B．other senators
C．other politicians
D．anyone in the United States
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