单项选择题

What's the main idea of the passage

A．Which is better: hearing aid or lip-reading
B．How to improve the quality of a hearing aid.
C．The difficulties the deaf meet in life.
D．How to help people who lose hearing.

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单项选择题

To communicate with the deaf, people ______.

A．have to make special efforts
B．must speak in a foreign language
C．should not smoke at all
D．use writing instead of speaking