问题
单项选择题
All languages, whether civilized or not, have their own ______.
A．ways to transfer ideas
B．forms to satisfy needs
C．abilities to answer description
D．systems to expand vocabulary
答案
参考答案：D
解析：[分析] 细节题型。 根据第二段第六句...all languages seem to possess the machinery for vocabulary expansion...原文可知，扩展词汇是每一种语言的共性。machinery for组织，机构。