Hp与慢性胃炎的关系下列哪项不正确()A．胃黏膜活检Hp阳性率高 B．血中Hp抗体升

先天性髋脱位脱位期的主要体征为（）

A.鸭步、跛行

B.Barlow试验阳性

C.Ortolani试验阳性

D.Telescoping征阳性

E.Trendelenburg征阳性

世界煤储量在世界能源总储量中占90%，按目前规模开采可持续200年左右。据19世纪80年代初世界能源会议等组织的资料，世界煤资源地质储量为14.3万亿吨，其中探明储量为3.5万亿吨，约占24.5%；在总储量中硬煤占75%，褐煤占25%。按硬煤经济可采储量以美国、俄罗斯、中国最为丰富，分别占世界总量的24.8%、21.5%、19.6%，共占2/3。

硬煤经济可采储量占世界总量比例最高的国家是（）。

A．美国

B．中国

C．俄罗斯

D．都不是

在20世纪一二十年代发表著作，对官僚制度进行系统分析和论证，并促成了公共行政学理论体系建立的德国学者是（）。

A.马克斯•韦伯

B.古德诺

C.法约尔

D.赫伯特•西蒙

中心镇是( )。

A．县域城镇体系中，在经济、社会和空间发展中发挥中心作用，且对周边农村具有一定社会经济带动作用的建制镇
B．县域城镇体系中，在经济、社会和空间发展中发挥中心作用，且对周边农村具有一定社会经济带动作用的非建制镇
C．经县人民政府确认的由集市发展而成的作为农村一定区域经济、文化和生活服务中心的建制镇
D．经县人民政府确认的由集市发展而成的作为农村一定区域经济、文化和生活服务中心的非建制镇

(46) History tells us that in ancient Babylon, the cradle of our civilization, the people tried to build a tower that would reach to heaven. But the tower became the tower of Babel, according to the Old Testament, when the people were suddenly caused to speak different languages. In modern New York City, a new tower, that of the United Nations Building, thrusts its shining mass skyward. (47) But the realization of the UN’s aspirations—and with it the hopes of the peoples of the world—is threatened by our contemporary Babel: about three thousand different languages are spoken throughout the world today, without counting the various dialects that confound communication between peoples of the same land.

In China, for example, hundreds of different dialects are spoken; people of some villages have trouble passing the time of day with the inhabitants of the next town. In the new African state of Ghana, five million people speak fifty different dialects. In India more than one hundred languages are spoken, of which only fourteen are recognized as official. To add to the confusion, as the old established empires are broken up and new states are formed, new official tongues spring up at an increasing rate.

In a world made smaller by jet travel, man is still isolated from many of his neighbors by the Babel barrier of multiplying languages. Communication is blocked daily in scores of ways. Travelers find it difficult to know the peoples of other nations. Scientists are often unable to read and benefit from the work being carried on by men of science in other countries. (48) The aims of international trade, of world accord, of meetings between nations, are blocked at every turn; the work of scholars, technologists, and humanists is handicapped. Even in the shining new tower of the United Nations in New York, speeches and discussions have to be translated and printed in the five official UN language—English, French, Spanish, Russian and Chinese. Confusion, delay, suspicion, and hard feelings are the products of the diplomatic Babel.

The chances for world unity are lessened if, in the literal sense of the phrase, we do not speak the same language. (49) We stand in dire need of a common tongue, a language that would cross national barriers, one simple enough to be universally learned by travelers, businessmen, government representatives, scholars, and even by children at school.

Of course, this isn’t a new idea. Just as everyone is against sin, so everyone is for a common language that would further communication between nations. (50) What with one thing and another—our natural state of drift as human beings, our rivalries, resentments, and jealousies as nations—we have up until now failed to take any action. I propose that we stop just talking about it, as Mark Twain said of the weather, and do something about it. We must make the concerted, massive effort it takes to reach agreement on the adoption of a single, common auxiliary tongue.

(46) History tells us that in ancient Babylon, the cradle of our civilization, the people tried to build a tower that would reach to heaven