操纵着该国政府的顽固保守分子，实行残暴的威吓政策，企图扼杀社会改革并阻止人民为建立理想社会而做出的令人称道的努力。作为一名具有正义感的知识分子，我对此感到耻辱。

A．it is necessary for the parents to bring the teenagers to a doctor if they have an unsteady mood
B．raising children from 12 to 16 is an especially difficult task for parents as a whole
C．it is not normal for teenagers to try to gain adult independence
D．in raising children, the more adults there are in a family, the better

A．consists of a lot of different aspects
B．has been playing indispensable role in the world trade
C．has generally its own free specific business environment
D．has been playing an ever more significant role in the growth of world trade