[单项选择]The symptoms of Alzheimer’s disease were long dismissed as normal con sequences of human aging, but in the 1980’s the disease came to be recognized as the most common cause of intellectual deterioration in the elderly and middle-aged. It is characterized by the death of nerve cells in the cerebral cortex--the part of the brain involved in complex functions.
The major debilitating symptoms of Alzheimer’s disease include serious forgetfulness--particularly about recent events--and confusion, At first, the individual experiences only minor and almost imperceptible symptoms that are often attributed to emotional upsets or other physical illnesses. Gradually, however, the person becomes more forgetful, and this may be reported by anxious relatives. The person may neglect to turn off the oven, may misplace things, may recheck to see if a task was done, may take longer to complete a chore that was previously routine, or may repeat already-answered questions. As the disease progresses, me
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]The symptoms of Alzheimer’s disease were long dismissed as normal consequences of human aging, but in the 1980’s the disease came to be recognized as the most common cause of intellectual deterioration in the elderly and middle-aged. It is characterized by the death of nerve cells in the cerebral cortex--the part of the brain involved in complex function.
The major debilitating symptoms of Alzheimer’s disease include serous forgetfulness -- particularly about recent events--and confusion. At first, the individual experiences only minor and almost imperceptible symptoms that are often attributed to emotional upsets or other physical illnesses. Gradually, however, the person becomes more forgetful, and this may be reported by anxious relatives. The person may neglect to turn off the oven, may misplace things, any recheck to see if a task was done, may take longer to complete a chore that was previously routine, or may repeat already-answered questions. As the disease progresses, mem
A. In the past, Alzheimer’s disease has often been mistaken as normal human aging.
B. Victims of Alzheimer’s disease rarely need to he institutionalized.
C. There is currently no cure for Alzheimer’s disease.
D. The primary symptoms are serious forgetfulness and confusion.

[单项选择] The symptoms of Alzheimer’’s disease were long dismissed as normal consequences of human aging, but in the 1980’’s the disease came to be recognized as the most common cause of intellectual deterioration in the elderly and middle-aged. It is characterized by the death of nerve cells in the cerebral cortex -- the part of the brain involved in complex function. The major debilitating symptoms of Alzheimer’’s disease include serous forgetfulness -- particularly about recent events--and confusion. At first, the individual experiences only minor and almost imperceptible symptoms that are often attributed to emotional upsets or other physical illnesses. Gradually, however, the person becomes more forgetful, and this may be reported by anxious relatives. The person may neglect to turn off the oven, may misplace things, any recheck to see if a task was done, may take longer to complete a chore that was previously routine, or may repeat already-answered questions. As the disease progress
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