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 (91) on the individual suggest that children engage in criminal behavior (92) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (93) with others. Theories focusing on the role of society suggest that children commit crimes in (94) to their failure to rise above their socioeconomic status, (95) as a rejection of middle, class values.
Most theories of juvenile delinquency have focused on children from disadvantaged families, (96) the fact that children from wealthy homes also commit crimes. The latter may commit crimes (97) lack of adequate parental control. All theories, however, are tentative and are (98) to criticism.
Changes in the social structure may indirectly (99) juvenile crime rates. For example, changes in the economy that (100) to fewer job opportunities for youth and rising unemployment (101) make gainful employment increasingly difficult to obtain. The resulting discontent may in (102) lead more youths into criminal behavior.
Families have also (103) changes these years. More families consist of one-parent households or two working parents; (104) , children are likely to have less supervision at home (105) was common in the traditional family (106) . This lack of parental supervision is thought to be an influence on juvenile crime rates. Other (107) causes of offensive acts include frustration or failure in school, the increased (108) of drugs and alcohol, and the growing (109) of child abuse and child neglect. All these conditions tend to increase the probability of a child committing a criminal act, (110) a direct causal relationship has not yet been established.
A．survived
B．noticed
C．undertaken
D．experienced
参考答案：D
解析： 本题要求判断哪个动词可以与changes构成动宾搭配，并符合文意。若只局限于所在句子的语义，答案可以不止一个。因此要根据上下文来确定最佳答案。上文从社会结构变化谈到经济变化再谈到家庭变化；下文则提到，越来越多的家庭变成单亲或双职工家庭。这些都在暗示家庭结构有了变化。四个选项构成的动宾搭配分别表示幸免于变化、注意到变化、承担变化和经历变化。B，C选项中的动词不与family搭配，因为其施动者通常是人，显然，experienced最恰当地表达了近几年家庭也经历着变化的含义。