碳酸氢钠处理糖尿病酮症酸中毒的指征为A．治疗酸中毒的起初2小时 B．出现血钾过高 C

对痛风最有诊断价值的X线征象是

A．双侧性小关节破坏

B．关节局部软组织肿胀伴钙化

C．关节间隙变窄，骨端硬化及边缘骨赘

D．骨端小囊状骨破坏

E．骨端穿凿样骨缺损伴边缘皮质翘起

有关子宫内膜异位症，下述哪项是错误的()。

A．子宫内膜组织生长在子宫以外，称子宫内膜异位症

B．分内在性与外在性两种

C．多发生于25～45岁的妇女

D．绝经后异位内膜可萎缩

E．用药物抑制排卵，可缓解疼痛

美国一女患者，患有严重的脑综合征、慢性压疮（褥疮）、心脏病、糖尿病等，对环境没有感觉，只有原始的脑功能，有自主呼吸，没有认识、行为能力，且无改善的希望，住院不久即插入鼻饲管以维持生命。她的监护人要求取走鼻饲管，被主管医师拒绝，监护人向法院起诉要求强迫取走，法院同意并下令取走；但受理上诉的法院否定了这个决定，认为中止喂饲就是杀人。3年后，女患者死亡，她的鼻饲管仍保留着

从医学伦理学角度说，此案例反映出的突出问题应除外（）.

A.临床医学决策同时也是伦理判断

B.医学上可能做的，不一定在伦理上是应该做的

C.市场经济对医学实践的正、负效应并存

D.生命神圣论与生命质量论的冲突

E.传统医德规范与现代医德观念的矛盾

关于肠梗阻，下列哪项是错误的（）

A.回盲部梗阻属高位肠梗阻

B.梗阻肠管有血运障碍者就是绞窄性肠梗阻

C.如无机械性因素存在者，多为动力性肠梗阻

D.慢性、不完全性肠梗阻多为单纯性肠梗阻

E.绞窄性肠梗阻必然是急性完全性肠梗阻

The fact that most Americans live in urban areas does not mean that they reside in the center of large cities. In fact, more Americans live in the suburbs of large metropolitan areas than in the cities themselves.
The Bureau of the Census regards any area with more than 2,500 people as an urban area, and does not consider boundaries of cities and suburbs.
According to the Bureau, the political boundaries are less significant than the social and economic relationships and the transportation and communication systems that integrate a locale. The term used by the Bureau for an integrated metropolis is an MSA, which stands for Metropolitan Statistical Area. In general, an MSA is any area that contains a city and its surrounding suburbs and has a total population of 50,000 or more.
At the present time, the Bureau reports more than 280 MSAs, which together account for 75 percent of the US population. In addition, the Bureau recognizes 18 megapolises, that is, continuous adjacent metropolitan areas. One of the most obvious megapolises includes a chain of hundreds of cities and suburbs across 10 states on the East Coast from Massachusetts to Virginia, including Boston, New York, and Washington, D.C. In the Eastern Corridor, as it is called, a population of 45 million inhabitants is concentrated. Another megapolis that is growing rapidly is the California coast from San Francisco through Los Angeles to San Diego.

Why does the author mention the Eastern Corridor and the California coast in Paragraph 4

A. As examples of megapolises.
B. Because 75 percent of the population lives there.
C. To conclude the passage.
D. The Bureau of the Census is located there.