参考答案

正确答案：C
解析：该题问：下面的哪句陈述是正确的？A项意为“一些处理能被消除掉”，文中没有提及。B项意为“年轻人在提示警察一些事件中扮演无足轻重的角色”，不正确。在第三段中有这样的提示：Just days after the Santana High School shooting, students tipped off police who arrested a handful of kids at several other California schools for allegedly making threats that... 意为“Santana校园枪击案发生之后，加州其他学校学生向当地警察提供情报，逮捕了几个闹事学生。这几个学生被指控犯有威胁他人生命安全罪”。C项意为“据显示，作案者在案发前有可能将计划透露给自己的伙伴”。这是正确选项。在本文的第四段中有此线索：A recent Secret Service study found that in more than three quarters of school shootings, the attacker told someone, almost always a peer, about his plan beforehand． D项意为“不难使人们明白揭发检举别人也是他们的利益需要”，这项不正确。在第四段中有这样的线索：That's a tough task, considering children are taught almost from kindergarten, not to tattle．故排除D项。