土地利用的含义及其内容？

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.

56().

A.immune 

B.resistant 

C.sensitive 

D.subject

有些植物的________和_____________之间生有形成层，该结构属于___________组织，可向外分裂形成新的___________，向内可分裂形成新的____________，因而可使植物体不断长粗。但也有些植物（如竹子、玉米）茎中没有形成层，因而不能长得很粗。

医疗用流动诊疗车，内设有手术室，并配有麻醉设备及其他外科器具

在公益性、救济性捐赠的检查时，应检查( )科目。

A．管理费用

B．财务费用

C．其他业务支出

D．营业外支出

证券公司融券可以使用（）。

Ⅰ.自有资金

Ⅱ.自由证券

Ⅲ.依法筹集的资金

Ⅳ.依法取得处分权的证券

A.Ⅱ、Ⅲ、Ⅳ

B.Ⅰ、Ⅱ、Ⅲ

C.Ⅱ、Ⅳ

D.Ⅰ、Ⅳ