A allocate different tasks to people in different ages. B create a pleasant working environment for the older. C enhance cooperation among members. D promote age diversity of employees.

A The worry about an aging society is in fact groundless. B The new government report-s find little support. C Delaying full retirement is a dangerous tendency. D Issues arising from an aging society can be tackled.

A Shock of gray:how we can fill the pension gap. B Shifting views of seniors:less burden,more asset. C An aging society:challenges,as well as opportunities. D Young Americans:how to make a fresh map of life?

A measure the objectivity of news feed on its own. B improve its ability to tell truth from falsehood. C shed off the responsibility of a news provider. D outsource news credibility to its massive users.

A adopting Al technology. B relying on its 2 billion users. C building a Facebook"community". D ranking news outlets by credibility.

A the poor quality of newspapers nowadays. B the long-standing trust issue in news businesses. C the problems arising from Facebook's shift. D the issue of trust in the Digital Age.

A a lesson for news providers on filtering news. B the cause of the trust crisis across business of news. C a step towarcl restoring users'trust in news business. D the result of lacking objective facts and rational discourse.

A Common grounds among users are the sources of high quality news. B Programmed electrons can make good judgment on news quality. C Computers can not replace human beings in news selection. D Reader feedback is not needed in respected newsrooms.

A the number of ads is experiencing an unprecedented decrease. B the decline of advertising jobs results from a drop in ads. C advertising jobs usually increase during an economic expansion. D Americans are more willing to read ads today than in the past.

A ad agencies. B media companies. C Facebook and Google. D branded content makers.