a parent, relative, friend, or doctor outside the family, had higher self-esteem, higher grades, and lower substance use than peers whose role models were sports figures, singers, or other media characters.
出自-2013年6月阅读原文
Cell phonesfoster social connections with peers across time and space.
出自-2013年12月阅读原文
They are usually more motivated to compete with their peers.
出自-2013年12月听力原文