单项选择题

Which form other than oral speech would be most commonly used among blind people（）

A．Picture signs.
B．Braille.
C．Body language.
D．Signal languag

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单项选择题

Rivers bring （）

A．people and crops
B．life and wealth
C．poverty and death
D．agriculture and bridge

单项选择题

Which of the following statements is NOT true（）

A．There are many forms of communication in existence today.
B．Verbalization is the most common form of communication.
C．The deaf and the mute use an oral form of communication
D．Ideas and thoughts can be transmitted by body languag