"No man is an island," wrote the poet John Donne several centuries ago. He was【C1】______on

e of our most distinctive【C2】______: the fact that we are social animals【C3】______behavior. and personalities are【C4】______by the groups to which we belong.【C5】______life, most of our daily activities are performed in the【C6】______of others. Whether our purpose is working, playing,【C7】______a family, learning, or simply relaxing, we usually pursue in groups,【C8】______the group is as small as two or three people. Our need【C9】______human contacts is not merely a practical one; it is a deep【C10】______need as well. If people are【C11】______of the company of others for prolonged periods,【C12】______breakdown is the usual result. Even the Geneva Convention, an international agreement that【C13】______the treatment of prisoners of war,【C14】______this need. It regards solitary. (孤独的) imprisonment for more than thirty days【C15】______a cruel form. of torture. In its strictest【C16】______, a group is a collection of people【C17】______together in an orderly way on the basis of【C18】______expectations about one another's behavior. As a result of this interaction, members feel a 【C19】______sense of" belonging". They distinguish members【C20】______nonmembers and expect certain kinds of behavior. from outsiders.

【C1】

A．acknowledging

B．verifying

C．proving

D．achieving