单项选择题

Most of us think we know the kind of kid who becomes a killer, and most of the time we’re right. Boys (1) about 85% of all youth homicides, and in those cases about 90% (2) a pattern in which the line from bad parenting and bad (3) to murder is usually clear. Their lives start with abuse, neglect and (4) deprivation at home. Add the effects of racism, poverty, the drug and gang cultures, and it is not (5) that in a violent society like ours, (6) children become deadly teens.
(7) what about the other 10% of kids who kill: the boys who have (8) parents and are not poor Are their parents to blame when these kids become (9)
Most children do fine while young enough to be (10) by loving parents, but change as adolescents subjected to peer competition, bullying and rejection, (11) in big high schools. The "normal" culture of adolescence today contains elements that are so nasty that it becomes hard for parents to (12) between what in a teenager’s talk, dress and taste in music, films and video games indicates (13) trouble and what is simply a (14) of the times. Most kids who have multiple body piercing, or listen to Marilyn Manson, or play the video games are normal kids caught in a toxic (15) Intelligent kids with good social skills can be quite skillful at hiding who they really are from their parents. They may do this to (16) punishment, to escape being identified as "crazy", or to protect the parents they love from being (17) or worried. Anyway, how many parents are (18) of thinking the worst of their son -- (19) , that he harbors murders fantasies, or that he could (20) so far as acting them out.

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