With the popularity of ______ cell phone, more and more people are addicted to it and do less and less face-to-face communication, which has become _______ widespread concern.

A．the; a

B．\; \

C．the; \

D．a; the

所谓人生价值，就是人的生存、发展、创造等活动满足社会、他人需要的积极作用。