[单项选择]Cooperation is the only safeguard we have against the development of neurotic tendencies. It is therefore very important that children should be trained and encouraged in cooperation, and should be allowed to find their own way amongst children of their own age, in common tasks and shared games. Any barrier to cooperation will have serious consequences. The spoilt child, for example, who has learned to be interested only in himself, will take this lack of interest in others to school with him. His lessons will interest him only in so far as he thinks he gains his teachers’ favor. He will listen only to what he considers advantageous to himself. As approaches adulthood, the result of his lack of social feeling will become more and more evident. When he first misunderstood the meaning of life, he ceased training himself for responsibility and independence. By now he is painfully ill-equipped for life’s tests and difficulties. We cannot blame the adult for the child’s early mistake A. facing life’s tests and difficulties with courage. B. the progress of human civilization. C. the importance of learning to cooperate. D. the early education of children.