经济发展的加速过程中出现了一些新的矛盾，特别是投资规模过大，一些行业和地区盲目投资，低水平重复建设的问题非常严重，资源、交通和一些原材料的供需关系非常激烈。

单项选择题We may infer from the first paragraph that parents（）

A. find that their children like to watch those sex or violence TV programs
B. hope that school or society can do something to control bad TV programs
C. feel that they can exert some influences on their children at home only
D. realize that there is a generation gap between them and their children

单项选择题The author uses the example of the soap bubble blower to show that______.