【答案解析】[参考译文]
Because so many people in their teens and early 20s are in this constant frenzy of socializing—accessible to each other every minute of the day via cell phone，instant messaging and social—networking Websites—there are a host of new questions that need to be addressed in schools，in the workplace and at home．Some argue they can accomplish a great deal．Others contend that the bonds between them are shallow，and that their face—to—face interpersonal skills are poor．