问题
单项选择题
What is the author's main purpose in Paragraph I of the passage
A．To explain how cooperation differs from competition and conflict
B．To show the importance of group organization and attitudes
C．To offer a brief definition of cooperation
D．To urge readers to cooperate more often
答案
参考答案：C
解析：[分析] 主旨题型。 第一段第一句解释了什么是“cooperation”，随后又做了类比；因此选项C．“提供了‘合作’的一个简明解释”是答案。