In the view of the author, the studies of the impact of television violence on children______.

单项选择题The tone of the passage is ______.

单项选择题The number about reported thefts and convictions is used to illustrate that______.

单项选择题The author argues that ______.

单项选择题A century ago, how many lived to, or past 100, within a population of 5 million

单项选择题The author seems to suggest that ______.