阅读理解。阅读下列短文，从每题所给的四个选项A、B、C、D四个选项中，选出最佳选项。
While you are online there are plenty of perfectly legal sites where you can listen to music for free. This gives you the chance to listen to music before buying it, discover new music, and create great online playlists that you can share with others.
The Sixty One
The Sixty One is devoted to showcasing obscure or unknown artists of all genres. There’s a range of musical styles from classical to rock and roll, folk to jazz, and everything in between. Don’t expect to find big name musicians on here; you’re more likely to find the musicians playing at local coffee shops than bands you hear on the radio..
Pow Wow
Pow Wows are the Native American people’s way of meeting together, to join in dancing, singing, visiting, renewing old friendships, and making new ones. This is a time method to renew Native American culture and preserve the rich heritage of American Indians. PowWows.com has 2 online radio stations that play Native American Music 24/7 free! Here you can listen to your favorite artists and drum groups on your computer or mobile device and add your music to our station.
Playlist
Playlist has an enormous library, so you can create playlists with almost any musician you can think of. They have both some lesser known artists and big names, so you have a really good selection. The worst part: Due to licensing laws, many of the songs on Playlist are now restricted to certain countries. So unless you live inside the US, it is likely that you might not be able to find all of your favorite songs.
Pandora
Pandora is an intelligent Internet radio site. Basically, as you listen, you can give each song a thumbs up or thumbs down. You can create your own radio station that only plays music you like. The best part: It listens to your opinion, so that after a while it’s only playing music you like, but the list is always changing and expanding.
My Space
Combine a major social networking site with thousands of artists around the world. Each musician has their own page, which normally has a playlist of several of their songs. But it has a huge range of musicians ranging from huge stars to the up-and-coming, and you can listen to the music and interact with the rest of the page.
1.If you enjoy listening to some new music, you can pay a visit to ______.
A. Pow Wow B. Playlist C. The Sixty One D. Pandora
2.You can’t listen to some music on Playlist possibly because ______.