A． Frequently change their passwords of online account
B． Put their photos online frequently and randoml
C． Guarantee the decency of language on their site
D． Use their real full name for their online accoun
参考答案C
解析:对话中解释到，只要朋友有不文明的语言出现在他们孩子的网站上，孩子就要对此负责，如果孩子不对这样的朋友加以阻止，父母就应该收回孩子的网站。可见C为正确答案。
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A． keep updated with current internet application
B． split the bill with their children for going onlin
C． get the password of their child's online accoun
D． ask their kids to watch the language on their site
单选题As children grow up, their online photos and webpages may be viewed by authority from the fields of
A． academic and professiona
B． military and supervisor
C． health-care and educationa
D． political and economi
