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 ____ 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. ____ 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 ____ a short text. Today cartoons are a ____ of the daily life of most people. Cartoons not only show their life, ____ also help them relax.