a,b,c,d都是有理数,x是无理数,则为有理数.()
(1)a=0; (2)c=0.
参考答案:E
解析:
条件(1)、(2)单独显然不成立,联合,若d=0,则不符合.
21岁女孩。1年前患者因舍友嘲笑自己体形较胖(66kg),觉得被同学笑话了,于是开始节食,早餐一片面包,午餐一份粥,晚餐不进食,开始还觉得饿,后来自我感觉不饿并且厌恶食物的味道,体重迅速下降至25kg,被学校强令休学。患者已出现闭经,身体无力,潮热,盗汗,极少进食。被家人带来入院。既往健康,无阳性家族史。
进行认知治疗时,除改变错误认知外,最好的措施是()
A.要求患者自觉按量进食
B.固定进食量,如违反就施以惩罚
C.为其制定进食计划,让其严格执行
D.顺其自然
E.共同制定进食计划,要求其执行,如目标达到,表扬或奖励
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.
17()
A.impressed
B.surpassed
C.influenced
D.regarded