380.This is a matter of personal choice.

　　381.Sth is of great importance for sb

　　382.Sb is undergoing fast physical development.

　　384.A reasonable amount of exercise guarantee s a good appetite and sound sleep at night.

　　385.The colorful pictures and vivid characters of PC games are far more exciting than dull black letters in textbooks.

　　386.contain violence pornography

　　387.PC games have contributed a lot to failing eyesight among teenagers in recent years.

　　388.use sth in a more rational and controlled way

　　389.With one parent at home, the family will enjoy a lot of advantages that it has never experienced before.

　　390.There is often something exclusively for adults involved in them, such as the adoption of usually appeal ing scenes.

　　391.As we know, young people are susceptible to bad influences.

　　392.Sb try every means possible to attract people's attention

　　393.mislead young people in choosing their lifestyles

　　394.Teachers should give priority to practical courses over such traditional ones as history and geography.

　　395.These days there is a growing tendency for college students to have difficulties in finding jobs when they graduate.

　　396.hold the opinion that lack of practical knowledge contribute to this situation

　　397.emphasis on practical course is demanded by our ever-developing society

　　398.If a student has little knowledge of computers or business, he will lag behind the times.

　　399.They are either too theoretical or too academic.

　　400.There is no denying the fact that.....