你认为AES比DES有哪些优点？

He thought this was the first pair of shoes that had fitted him ________.

A．perfectly

B．justly

C．fairly

D．rightly

比较两种药物的疗效时，研究者只关心新药的疗效是否优于旧药，应选用

A．t检验
B．卡方检验
C．单侧检验
D．双侧检验
E．配对检验

读图，回答下列问题。

小题1:有关图中序号代表区域的叙述正确的是（ ）

①代表的国家是菲律宾，主要物产是蕉麻和椰子；

②处是南海，南海诸岛是我国的固有领土；

③处是重要的海上通道——马六甲海峡；

④地所在国家是世界上重要的稻米出口国。

A．①②③

B．②③④

C．①②④

D．①③④小题2:图示区域成为世界上重要的热带经济作物产地的主要自然原因是（ ）

A．热量、水分充足

B．平原为主，地势平坦

C．种植历史悠久、生产技术高

D．市场需求量大

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.

9（）

A.in

B.by

C.off

D.up

简述区域试验方案的主要内容。