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问题 单项选择题

阿托品抗休克的主要机制是( )。

A．心率加快，增加心排血量

B．扩张血管，改善微循环

C．扩张支气管，降低气道阻力

D．兴奋中枢神经，改善呼吸

E．收缩血管，升高血压

答案

参考答案：B

解析：[知识点] M胆碱受体阻断药 阿托品的作用机制

单项选择题

Many theories concerning the causes of juvenile delinquency (crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (51) on the individual suggest that children engage in criminal behavior (52) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (53) with others. Theories focusing on the role of society suggest that children commit crimes in response to their failure to rise above their socioeconomic status, (54) as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, ignoring the fact that children from wealthy homes also commit crimes. The latter may commit crimes (55) lack of adequate parental control. All theories, however, are tentative and are (56) to criticism. Changes in the social structure may indirectly (57) juvenile crime rates. For example, changes in the economy that lead to fewer job opportunities for youth and rising unemployment (58) make gainful employment increasingly difficult to obtain. The resulting discontent may in turn lead more youths into criminal behavior. Families have also (59) changes these years. More families consist of one-parent households or two working parents; consequently, children are likely to have less supervision at home (60) was common in the traditional family structure. This lack of parental supervision is thought to be an influence on juvenile crime rates.

54().

A.or 

B.but rather 

C.but 

D.or else
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多项选择题

秘书审核文稿时，应包括对文稿的()审核。

A、接发电子邮件，紧急情况和日常情况

B、文件归档保存，秘书处和生产车间

C、接到客户的电话投诉和信件投诉

D、收到电子邮件，内部客户与外部客户
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