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　　381.Sth is of great importance for sb

　　382.Sb is undergoing fast physical development.

　　384.A reasonable amount of exercise guarantees 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 contr123ted 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 *ually appealing scenes.

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