![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
The main idea of the passage is that ______.
A.
the two kinds of words, popular and learned words, are both important in a cultivated language
B.
it is easy to learn popular words in a language
C.
we must make great efforts to learn learned words
D.
learned words are more important than popular words