帕金森病（Parkinson disease)

与精神分裂症、睡眠紊乱、精神发育迟缓、 Parkinson病（帕金森病）、躁郁性精神病有关

A.多巴胺受体

B.乙酰胆碱受体

C.5羟色胺(5-HT)受体

D.肾上腺素受体

E.γ氨基丁酸受体

A.多巴胺受体

B.乙酰胆碱受体

C.5-羟色胺（5-HT）受体

D.肾上腺素受体

E.γ-氨基丁酸受体

A.神经胶质细胞损伤

B.多巴胺能神经元退化

C.大脑中受体_上出现竞争性化学反应

D.用于分解残留于突触间隙中的酶出现缺陷

It is believed by scientists that traditional medicine______.

A．can cure all kinds of diseases

B．are no longer useful for modem men

C．may cure some of today's most serious diseases

D．are too cheap to be useful

According to passage, which of the foUowing are governments most worried about？

A．The diseases and disability of older people.

B．The longer life and good health of people.

C．The loss of taxes on older people.

D．The increasing respect for older people.

How does the author look at procrastination？

A．It is something like running.

B．It is a disease of mind.

C．It is not a permitted act.

D．It is not full of stress.

Why is a special substance painted on the tree？

A．To make a wound smooth.

B．To prevent disease entering a wound.

C．To cover a rough surface.

D．To help a wound to dry.

A．Reducing the risk of death from cancer.

B．Reducing the risk of death from heart diseases.

C．Extending drinkers~ life span.

D．Alleviating the stress of modern people.

With good leaders, ______.

A．rats killed thousands of Asians and Africans

B．rats carry diseases on to the moon

C．rats survive the poison food

D．rats eat millions of tons of grain each year