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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单项选择题
In The major debilitating symptoms of Alzheimer’s disease include serous forgetfulness- particularly about recent events-- and confusion. , debilitating means______.
A．deceasing
B．declining
C．serious
D．degrading
问答题
Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal speed, listen and try to understand the meaning. For the second and third readings, the passage will be rend sentence by sentence, or phrase by phrase with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minutes to check through your work once more. Please write the whole passage on ANSWER SHEET ONE.
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