A Students should not be encouraged to multitask because it can lead to hyperactivity.
B Children and adolescents spend more than six hours of their day using electronic devices.
C Listening to music while surfing on the Web can be dangerous and harmful for students' studying habits.
D No handheld video games and websites can help preschoolers learn colors, numbers, letters and spelling.
E All contemporary school teachers make students use different technological devices to learn, such as PDAs, cellular phones, and handheld gaming devices.