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问题 单项选择题

关于一个国家货币的贬值或升值，下列表述错误的是（）。

A．本国货币贬值有利于本国外汇的增收节支

B．本国货币贬值有利于本国不断扩大出口

C．本国货币升值有利于本国进口外国技术设备

D．某国货币升值对持有该国币种债务的国家有利

答案

参考答案：A

解析：

本国货币贬值后，出口同样数量的商品换取的外汇减少了。

单项选择题

彩色多普勒超声显像的仪器调节正确，但血管内彩色信号缺失，主要原因为（）。

A.血管与声束成0°

B.血管与声束成180°

C.血管与声束成120°

D.血管与声束成90°

E.血管与声束成60°
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单项选择题

Attempts to understand the relationship between social behavior and health have their origin in history. Dubos (1969) suggested that primitive humans were closer to the animals (1) they, too, relied’upon their instincts to stay healthy. Yet some primitive humans (2) a cause and effect relationship between doing certain things and alleviating (3) of a disease or (4) the condition of a wound. (5) there was so much that primitive humans did not (6) the functioning of the body, magic became an integral component ofthe beliefs about the causes and cures of heath (7) Therefore it is not (8) that early humans thought that illness was caused (9) evil spirit. Primitive medicines made from vegetables or animals were invariably used in combination with some form of ritual to (10) harmful spirit from a diseased body.

One of the. earliest (11) in the Western world to formulate principles of health care based upon rational thought and (12) of supernatural phenomena is found in the work of the Greek physician Hippocrates. The writing (13) to him has provided a number of principles underiying modern medical practice. One of his most famous (14) , the Hippocratic Oath, is the foundation of contemporary medical ethics.

Hippocrates also argued that medical knowledge should be derived from a (15) of the natural science and the logic of cause and effect relationships. In this (16) thesis, On Air, Water, and Places, Hippocrates pointed out that human well-being is (17) by the totality of environmental (18) : living habits or lifestyle, climate, geography of the land, and the quality of air, and food. (19) enough, concerns about our health and the quality of air, water, and places are (20) very much written in twentieth century.

16（）

A.durable

B.classic

C.thorough

D.immediate
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