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问题 单项选择题

假设AX和BX寄存器中存放的是有符号数，为了判断AX寄存器中的数据是否大于BX寄存器中的数据，应采用下面( )指令序列(注：label为标号)。

A．SUB AX,BXJC label

B．SUB AX，BXJNC lable

C．CMP AX，BXJA lable

D．CMP AX，BXJG label

答案

参考答案：D

选择题

高铁酸钾（K2FeO4）是一种新型、高效、多功能水处理剂。下列反应可制取K2FeO4：

Fe2O3+3KNO3+4KOH  2K2FeO4+3KNO2+2H2O。下列说法正确的是

A．该反应是非氧化还原反应

B．KNO3是还原剂

C．生成1mol K2FeO4转移的电子数为4 mol

D．K2FeO4不仅具有杀菌消毒作用，而且具有净水作用
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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.

7（）

A.damages

B.agitation

C.disorders

D.collapse
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