We are said to be living___the age of information now.

问题描述:

We are said to be living___the age of information now.
A.at B.in C.with D.on
答案应该选B,为什么?请说明原因,

age在这个句子里是时代、世纪的意思,即a particular period of history,一般用单数
in the age为固定搭配,意思为在.时代
We are said to be living in the age of information now.据说我们现在生活在电脑时代.
在朗文现代高级英语辞典中也有句子We are living in the computer age.