16. The truth about the English language is that_________.A、it has usually undergone imperceptible changes
B、it has existed for fifty hundred years
C、it has been changing all the time
D、it has never changed
【正确答案】：C
【题目解析】： 细节判断题。文章第一段提到英语时说The history of our language has always been a history of constant change，可见英语语言一直处于变化当中，因此C是正确答案。