问题
单项选择题 A1型题
风湿性心脏病最常侵犯的瓣膜是（）
A.二尖瓣及三尖瓣
B.三尖瓣及肺动脉瓣
C.主动脉瓣及肺动脉瓣
D.二尖瓣及主动脉瓣
E.二尖瓣及肺动脉瓣
答案
参考答案：D
解析：考查学生对于风湿性心脏病概念的掌握，风心病是指急性风湿性心脏炎症反复发作后遗留的心脏瓣膜病变，最常受累的是二尖瓣，主动脉瓣常同时受累。
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风湿性心脏病最常侵犯的瓣膜是（）
A.二尖瓣及三尖瓣
B.三尖瓣及肺动脉瓣
C.主动脉瓣及肺动脉瓣
D.二尖瓣及主动脉瓣
E.二尖瓣及肺动脉瓣
参考答案：D
解析：考查学生对于风湿性心脏病概念的掌握，风心病是指急性风湿性心脏炎症反复发作后遗留的心脏瓣膜病变，最常受累的是二尖瓣，主动脉瓣常同时受累。
| 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 modem 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. |
As used throughout the passage, the term "common" is closest in meaning to which of the following
A．Ordinary.
B．Shared.
C．Simple.
D．Popular.