Some television programs are educational, informative and inspiring, and are often more effective than books in bringing children a wide scope of knowledge. Common questions, such as how a tree grows, why it snows in the winter and what the Great Wall is, can be answered in television shows. What children learn from television can be a vital complement to their school learning. When children who frequently watch educational programs on television take elementary school classes, they are more likely to receive higher grades and value their studies more than their fellow students. Also, according to a latest study conducted by a group of scientists from the University of Siena in Italy, television programs, particularly cartoons and comedies, are effective sources of relief to children who are under intense pressure or in severe pain.

单词和词组 

a wide scope of 广泛的=a wide range of

vital 至关重要的 =critical, decisive, fundamental 

句型结构 

...particularly cartoons and comedies...插入语结构 

Many people, particularly those who lead busy lives, have little time or inclination to read books, but they enjoy watching television.