Children's lives these days are quite different from our generation's.   Describe what are the biggest changes in younger generation and explain some  factors of this phenomenon.

　　Model Answer:

　　Over the past few decades, the world has significantly changed. Nowadays,   many have begun to wonder what the reasons behind [=for] these changes are. Two   major factors contributing to this phenomenon are advances in media and change   family dynamics [=organization].

　　First, advances in media, such as the Internet and TV, have meant that   children spend a large portion of their leisure time in front of a screen.   Consequently, they are not getting proper amounts of exercise, which results in   an increase in the number of children who are overweight and obese. In addition,   fast food restaurants have become increasingly popular, which has also   contributed to children's health problems

　　Moreover, another leading force of this trend is changes in the family   unit. Compared with a half century ago, nuclear families have become way more   common in modern society. People tend to have only one child, which has caused   personality disorders such as depression, loneliness, and selfishness. This is   mainly because parents with one child have tendency to put all their focus and   money into their only son or daughter. Studies have indicated that over 65% of   children who are brought up without siblings show self-centered behavior find it   difficult cooperating with their peers.

　　In summary, there are many factors that have caused children to live very   differently from the generation before them. There are high hopes that parents   exercise(s) wisdom in treating their children.