Which of the following is closest in meaning to the word "dementia" in Paragraph 6?（ ）
A.正确答案BNervous disorder.
B.Loss of cognition.
C.Physical disability.
D.Symptom of depression.
Which of the following is closest in meaning to the word "dementia" in Paragraph 6?（ ）
Which of the following is closest in meaning to the word "dementia" in Paragraph 6?（ ）
A.正确答案BNervous disorder.
B.Loss of cognition.
C.Physical disability.
D.Symptom of depression.
