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问题 填空题

血管分为：

（1）动脉：将血液从______输送到身体各部分去的血管．特点：管壁较______，管腔较小，弹性大，血流速度______，不断分支．

（2）静脉：将血液从身体各部分送回______的血管．特点：管壁较薄，弹性______，管腔较小，血流速度较慢，通常具有静脉瓣．

（3）______：连通于最小的动脉与静脉之间．特点：只允许______单行通过，由一层扁平上皮细胞构成，血流速度慢．

答案

人体内的血管有动脉血管、静脉血管、毛细血管三种类型．

（1）动脉血管管壁厚，弹性最大，管腔较小，血流速度最快，其功能为将血液从心脏输送到全身各处去；

（2）静脉血管管壁较薄，弹性较小，管腔大，血流速度慢，其功能为将血液从全身各处输送到心脏去；

（3）毛细血管连通于最小的动脉与静脉之间．特点：管壁最薄，只有一层上皮细胞构成，管腔最小，只允许红细胞呈单行通过，血流速度极慢，数量最多，其功能为物质交换的场所．

故答案为；（1）心脏；厚；快（2）心脏；小；（3）毛细血管；红细胞

单项选择题

（）是指从事证券业务的金融企业为证券交易的资金清算与交收而存入指定清算代理机构的款项。

A.存出保证金

B.清算备付金

C.同业存放

D.拆放同业
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单项选择题

Social control refers to social processes, planned or unplanned, by which people are taught, persuaded, or forced to conform to norms. In every society, some punishments or negative sanctions are established for deviant behavior. Without deviant behavior there would not be need for social control and without social control there would not be a way of recognizing the boundary between the acceptable and the unacceptable.

Social control may be either formal or informal. Informal mechanisms include expressions of disapproval by significant others and withholding of positive rewards for disapproved behavior. Most people internalize norms in the course of socialization. This is any group’s most powerful protection against deviance, in that the individual’s own conscience operates as an agent of social control. When informal sanctions fail, formal agents of social control may be called upon. In contemporary society, such formal agents and agencies include psychiatry and other mental health professions; mental hospitals; police and courts of law; prisons; and social welfare agencies. All these formal agents function to limit, correct, and control violation of norms. Conflict theorists would also point out that social control agents and systems tend, in any society, to serve the interests of powerful groups and to enforce the norms most beneficial to those who make the rules and who, therefore, define unacceptable behavior.

Social control, whether formal or informal, has a dual function. First, it punishes the wrongdoer and reaff’irms the boundaries of acceptable behavior. Second, and less recognized, it regulates the manner in which deviants are treated.

In the third paragraph, "a dual function" refers to ().

A. formal and informal

B. rewards and penalties

C. approval and disapproval

D. clarification and regulation
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