刚地弓形虫的实验诊断A．主要以查血液中包囊为主 B．主要以动物接种试验为主 C．要以

患者，男性，8岁，居住于农村。因发热、头痛3天，加重2天住院。3天前患儿突然发热，体温最高38.6℃，伴头痛，大便每日2～3次，稀便。近两天来体温持续在39℃以上，头痛加重，并且出现恶心、呕吐，时有烦躁、抽搐。病前10天当地下暴雨，患者曾赤脚在水中玩耍。体检：T39.2℃，R20次／min，P88次／min，BP90／60mmHg。嗜睡，结膜充血，双侧腹股沟淋巴结轻度肿大，质软，有压痛，局部无红肿。颈有抵抗，克氏征（±）。

诊断为钩端螺旋体病（脑膜炎型），其流行特征正确的是（）

A.热带、亚热带最多

B.夏秋季多发

C.田螺为其重要的储存宿主

D.钩体病后有较强免疫力

E.我国引起钩端螺旋体病雨水型和洪水型的主要菌群是黄疸出血群

F.引起钩端螺旋体病稻田型的主要菌群是黄疸出血群

心源性卒中首选的抗栓制剂是（）.

A.阿司匹林

B.华发令

C.潘生丁

D.氯吡格雷

E.中药制剂

简述旋涂稳定的控制。

可以采用水蒸气蒸馏法提取的成分是（）

A.紫草素

B.丹参新醌甲

C.异紫草素

D.番泻苷

E.茜草素

Cooperation is the common endeavor of two or more people to perform a task or reach a jointly cherished goal. Like competition and conflict, there are different forms of cooperation, based on group organization and attitudes.
In the first form, known as primary cooperation, group and individual unite. The group contains nearly all of each individual’s life. The rewards of the group’s work are shared with each member. There is an interlocking identity of individual, group, and task performed. Means and goals become one, for cooperation itself is valued.
While primary cooperation is most often characteristic of preliterate societies, secondary cooperation is characteristic of many modern societies. In secondary cooperation, individuals devote only part of their lives to the group. Cooperation itself is not a value. Most members of the group feel loyalty, but the welfare of the group is not the first consideration. Members perform tasks so that they can separately enjoy the fruits of their cooperation in the form of salary, prestige, or power. Business offices and professional athletic teams are examples of secondary cooperation.
In the third type, called tertiary cooperation or accommodation, latent conflict underlies the shared work. The attitudes of the cooperating parties are purely opportunistic; the organization is loose and fragile. Accommodation involves common means to achieve antagonistic goals; it breaks down when the common means cease to aid each party in reaching its goals. This is not, strictly speaking, cooperation at all, and hence the somewhat contradictory term antagonistic cooperation is sometimes used for this relationship.

Which of the following best describes the overall organization of the passage

A. The author describes a concept by analyzing its three forms.
B. The author compares and contrasts two types of human relations.
C. The author presents the points of view of three experts on the same topic.
D. The author provides a number of concrete examples and then draws a conclusion.