Read the following paragraphs and identify the sentence that is not appropriate in each of the paragraphs. 阅读下面段落,删除不合适的一句。 (1) The reasons behind juvenile crimes are complicated, two of which are the main ones. (2)The first and the most important one is the inharmonious family life, especially parents’ divorce that teenager experienced in childhood. (3)The lack of love and care from family, or the bad life models made by their parents do have serious influence on them. (4)The second reason is the impact of unfavorable social morality. (5)Some young people lack concept of right and wrong and self-control, and they are easily affected by some negative perceptions. (6)For instance, exposed to too much brutal and obscene information from the mass media, some teenagers are apt to commit violent crime or conduct anti-social offenses. (7)Parents should give them more care and love to help them to get rid of the shadows.