阅读短文，回答问题

Great poets spend a lot of time thinking before they finish a poem.

They are always worried about thechoiceof the words in their poems, and some of them cannot rest until they find the right ones. There're a lot of poems in history, but only a small group of them are still popular today.

You cannot read a poem like you read a newspaper or magazine. In order to understand the feelings in a poem, you should read it aloud and you should read the complete poem instead of parts of it. Sometimes you have to read the poem several times before you can understand it.