单项选择题

On the American flag, what does red stand for

A. Honor.
B. Justice.

C. Innocence.
D. Integrity.
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单项选择题
What will be held in the evening
A. A cocktail party.
B. A ball.
C. A dinner.

D. A concert.
填空题
Information About the Passage Daily, moderate drinking could almost ______ the risk of developing Alzheimer’s disease or other types of dementia, according to a new research. (1) The study, published this week in The Lancet Medical Journal, also finds that it doesn’t seem to matter what people drink-the effect is the ______. (2) The adverse effect of excess alcohol is beyond ______. (3) Dementia is often caused by a ______ vessel problem. (4) Acetylcholine is a brain chemical believed to facilitate learning and ______. (5)
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