单项选择题

It can be interred that aphasias in adults often result in permanent damage because ______.

A．much memory is lost
B．adults have more trouble learning a foreign language
C．the right hemisphere is no longer as adaptable as it once was.
D．brain cells in adults arc especially vulnerable to infection
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单项选择题
The author is primarily concerned with ______.
A．describing the process of language acquisition
B．explaining potential treatment of language defects
C．showing the importance of the left hemisphere of the brain to language mechanisms
D．depicting various means of diagnosing language defects
单项选择题
The author implies all of the following EXCEPT ______.
A．the ADA requires people with disabilities to pay for special accommodations
B．the ADA is designed to protect the civil rights of many people
C．public transportation must accommodate the needs of people with disabilities
D．The ADA protects the rights of people with mental impairments
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