We see 3D movies, games, TVs, and so on. Do you hear of  3D newspapers? Yes, here is a kind of newspaper from Belgian. And it was born  on March 3rd, 2010. This is the first 3D newspaper in the world. Huber Leklein with his friends began to make the 3D newspaper in January,2010. They worked really hard. And they finished   in March. If you buy this newspaper ,you can get a pair of free  3D glasses. All the pictures and ads  in the newspaper are in 3D,but the articles  are not in 3D.You can read this 3D newspaper by holding(  ) the newspaper 50cm away from the eyes. In fact, if people don't wear the 3D glasses, they can't read the newspaper very well because the pictures and words in it are not clear. People like reading 3D newspaper very much. But Hubert Lekein and his friends don't want to continue  with it because they spent too much money and time. What's the disadvantage  of the 3D newspaper?
It's too big. It's difficult to read. It's bad for eyes. It's too expensive .