问题
单项选择题
Which of the following statements about primary cooperation is supported by information in the passage
A．It was limited in prehistoric times.
B．It is usually the first stage of cooperation achieved by a group of individuals attempting to cooperate.
C．It is an ideal that can never be achieved.
D．It is most commonly seen among people who have not yet developed reading and writing skills.
答案
参考答案：D
解析：[分析] 词义题型。 见第三段第一句：While primary cooperation is most often characteristic of preliterate societies，secondary cooperation is characteristic of many modern societies．其中 preliterate(adj．文字出现以前的，尚未使用文字的)可根据构词法猜测出词义(pre-表示“前，在前”，而literate表示“有文化的，有阅读和写作能力的”)所以选项D为答案。