患者女性，12岁，诊断为脑脊髓膜炎，除进行急性期的治疗以外，为减少炎症后遗症的发生，

设当x＝θ时，函数f(x)＝sin x－2cos x取得最大值，则cos θ＝________.

下列对作家作品的解说中不正确的一项是（）。

A.在我国古代文学史上，有许多名家常并称，如："李杜"即李白与杜甫，"韩柳"即韩愈与柳宗元，"苏辛"即苏轼与辛弃疾

B."三言二拍"是我国古代五部短篇小说集的总称，作者是明代的冯梦龙

C."三曹"指的是汉末曹操及他的两个儿子曹丕、曹植，他们在诗歌创作上有很高的成就

D."左联五烈士"是一九三一年在上海被国民党反动政府秘密杀害的五位革命作家，他们是柔石、殷夫、冯铿、胡也频、李伟森

厨房开餐管理是指针对开餐的不同进程开展的各项控制管理工作。菜单供应品种原料准备齐全、当餐时蔬供应品种确定、当餐缺售或推销品种通报工作等属于烹调厨房的（）。

A.餐前预防工作

B.餐前准备工作

C.餐中管理工作

D.餐后善后工作

下列哪种肾损伤不必早期立即手术（）

A.肾横断

B.肾碎裂

C.肾蒂断裂

D.肾挫裂伤

E.肾盂撕裂伤

Society not only continues to exist by transmission, by communication, but it may fairly be said to exist in transmission, in communication. There is more than a verbal tie between the words common, community, and communication. (46) Men live in a community in virtue of the things which they have in common; and communication is the way in which they come to possess things in common. (47) What they must have in common in order to form a community or society are aims, beliefs, aspirations, knowledge—a common understanding—like-mindedness as the sociologists say. Such things cannot be passed physically from one to another, like bricks; they cannot be shared as persons would share a pie by dividing it into physical pieces. (48) The communication which insures participation in a common understanding is one which secures similar emotional and intellectual dispositions—like ways of responding to expectations and requirements.
Persons do not become a society by living in physical proximity, any more than a man ceases to be socially influenced by being so many feet or miles removed from others. (49) A book or a letter may institute a more intimate association between human beings separated thousands of miles from each other than exists between dwellers under the same roof. Individuals do not even compose a social group because they all work for a common end. The parts of a machine work with a maximum of cooperativeness for a common result, but they do not form a community. If, however, they were all cognizant of the common end and all interested in it so that they regulated their specific activity in view of it, then they would form a community. But this would involve communication. Each would have to know what the other was about and would have to have some way of keeping the other informed as to his own purpose and progress. Consensus demands communication.
We are thus compelled to recognize that within even the most social group there are many relations which are not as yet social. A large number of human relationships in any social group are still upon the machine-like plane. Individuals use one another so as to get desired results, without reference to the emotional and intellectual disposition and consent of those used. Such uses express physical superiority, or superiority of position, skill, technical ability, and command of tools, mechanical or fiscal. (50) So far as the relations of parent and child, teacher and pupil, employer and employee, governor and governed, remain upon this level, they form no true social group, no matter how closely their respective activities touch one another. Giving and taking of orders modifies action and results, but does not of itself effect a sharing of purposes, a communication of interests.