学进去

根据短文内容，在短文空格处填上一个恰当的词，使短文完整通顺。
Cartoon is the most popular TV program that attracts many children at the age 3 to 10. It’s 1． that the word “cartoon” came from Italian. It first referred to the picture before a true drawing on the wall. In the mid-19th century, it came into English. 2． the 1840s , it has also come to mean any picture that is humorous, satirical(讽刺的) or showing an opinion. It usually comes out in a newspaper and magazine, with or 3． a short text. Today cartoons are a4． of the daily life of most people. Cartoons not only show their life, 5． also help them relax.