如图所示的速度图象表示一质点做匀加速直线运动，试根据图象带质点的初速度v0=__

设l，m，n是不同的直线，α，β是不同的平面，则下列命题不正确的是（　　）

A．.若m⊥α，m⊥β，则α∥β．

B．若l⊂α，α∥β，则l∥β

C．.若m∥n，m⊥α，则n⊥α

D．.若l⊂α，α⊥β，则l⊥β

卖出套期保值的操作主要适用于以下（）的情形。

A.持有某种商品或资产（此时持有现货多头头寸），担心市场价格下跌，使其持有的商品或资产市场价值下降，或者其销售收益下降

B.已经按固定价格买入未来交收的商品或资产（此时持有现货多头头寸），担心市场价格下跌，使其商品或资产市场价值下降或其销售收益下降

C.预计在未来要销售某种商品或资产，但销售价格尚未确定，担心市场价格下跌，使其销售收益下降

D.预计在未来要购买某种商品或资产，购买价格尚未确定时，担心市场价格上涨，使其购入成本提高

可出现爆米花样钙化的是（）

A.结核球

B.错构瘤

C.肺癌

D.胸膜间皮瘤

E.矽肺

垂危病人突然出现神清多语、两颧泛红如妆、意欲进食的表现的是（）

A.神乱

B.少神

C.失神

D.假神

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.

11（）

A.expedition

B.incentives

C.stimuli

D.endeavors