单项选择题

This passage implies that victims of Alzheimer’s disease may______.

A．not remember childhood events
B．suffer a gradual worsening of cognitive functions
C．incur personality and behavioral changes
D．spend their last days in a long-term care institution
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单项选择题
A．In the past, Alzheimer’ s disease has often been mistaken as normal human aging.B．Victims of Alzheimer’ s disease rarely need to be institutionalized.C．There is currently no cure for Alzheimer’s disease.D．The primary symptoms are serious forgetfulness and confusion.
A．In the past, Alzheimer’ s disease has often been mistaken as normal human aging.
B．Victims of Alzheimer’ s disease rarely need to be institutionalized.
C．There is currently no cure for Alzheimer’s disease.
D．The primary symptoms are serious forgetfulness and confusion.
单项选择题
According to the passage, which of the following causes Alzheimer’s disease
A．Sever emotional stress.
B．Nutritional deficiency.
C．The death of nerve ceils in the cerebral cortex.
D．Severe head trauma.
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