Most Americans rely on social media to check daily headlines.Yet as distrust has risen towards all media，people may be starting to beef up their media literacy skills.Such a trend is badly needed.During the 2016 presidential campaign，nearly a quarter of Web content shared by Twitter users in the politically critical state of Michigan was fake news，according to the University of Oxford.And a survey conducted for BuzzFeed News found that 44%of Facebook users rarely or never trust news from the social media giant. Young people who are digital natives are indeed becoming better at separating fact from fiction in cyberspace.A Knight Foundation focus-group survey of young people between the ages of 14 and 24 found that they use"distributed trust"to verify stories.They cross-check sources and prefer news from different perspectives—especially those that are open about any potential bias."Many young people assume a great deal of personal responsibility for educationselves and are actively seeking out opposing viewpoints，"the survey concluded. Such active research can have another effect.A2014 survey conducted in Australia，Britain and the United States by the University of Wisconsin-Madison found that young people's reliance on social media led to greater political engagement.Social media allows users to experience news events more directly and immediately while also permitting them to re-share news as a projection of their values and interests.This forces users to be more conscious of their role in passing along information.A survey by Barna Group has found that the top reason given by Americans for the fake news phenomenon is"reader error"，more so than made-up stories or factual mistakes in reporting.About a third surveyed say that the problem of fake news lies in"misinterpretation or exaggeration of actual news"via social media. In other words，the choice to share news on social media may be at the heart of the issue."This indicates that there is a real personal responsibility in counteracting（抵制） this problem，"says Roxanne Stone，editor in chief at Barna Group. So when young people are critical of an over-tweeting president，they reveal a mental discipline in thinking skills—and in their choices on when to share on social media.（1）According to the article，many young Americans are casting doubt on ____ .A.the necessity of the news-filtering practiceB.people's preference for social media platformsC.the fake news stories shared during political campaignsD.the reliability of the news on social media（2）The underlined phrase in paragraph 2 is closest in meaning to " ____ ".A.enhanceB.defineC.assessD.share（3）According to the Barna survey，Americans think that the"fake news"problem is mainly caused by ____ .A.readers' outdated valuesB.readers' misinterpretationC.journalists' made-up storiesD.journalists' biased reporting（4）What can we infer from the article？ ____ A.Young people have realized that it is their duty to uncover the truthfulness of social media.B.Social media provides young people with easy access to news and allows them to re-share news at their will.C.ompared with the older generation，young Americans are more skillful at distinguishing fact from fiction online.D.Young people can't live without social media，which is making them become more engaged in politics than ever before.

A new survey by Harvard University finds that more than two-thirds of young Americans disapprove of President Trump's use of Twitter.The implication is that Millennials prefer news from the White House to be filtered through other sources，not a president's social media platform.
    Most Americans rely on social media to check daily headlines.Yet as distrust has risen towards all media，people may be starting to beef up their media literacy skills.Such a trend is badly needed.During the 2016 presidential campaign，nearly a quarter of Web content shared by Twitter users in the politically critical state of Michigan was fake news，according to the University of Oxford.And a survey conducted for BuzzFeed News found that 44%of Facebook users rarely or never trust news from the social media giant.
    Young people who are digital natives are indeed becoming better at separating fact from fiction in cyberspace.A Knight Foundation focus-group survey of young people between the ages of 14 and 24 found that they use"distributed trust"to verify stories.They cross-check sources and prefer news from different perspectives—especially those that are open about any potential bias."Many young people assume a great deal of personal responsibility for educationselves and are actively seeking out opposing viewpoints，"the survey concluded.
    Such active research can have another effect.A2014 survey conducted in Australia，Britain and the United States by the University of Wisconsin-Madison found that young people's reliance on social media led to greater political engagement.Social media allows users to experience news events more directly and immediately while also permitting them to re-share news as a projection of their values and interests.This forces users to be more conscious of their role in passing along information.A survey by Barna Group has found that the top reason given by Americans for the fake news phenomenon is"reader error"，more so than made-up stories or factual mistakes in reporting.About a third surveyed say that the problem of fake news lies in"misinterpretation or exaggeration of actual news"via social media.
    In other words，the choice to share news on social media may be at the heart of the issue."This indicates that there is a real personal responsibility in counteracting（抵制） this problem，"says Roxanne Stone，editor in chief at Barna Group.
    So when young people are critical of an over-tweeting president，they reveal a mental discipline in thinking skills—and in their choices on when to share on social media.

（1）According to the article，many young Americans are casting doubt on  ____ .
A.the necessity of the news-filtering practice
B.people's preference for social media platforms
C.the fake news stories shared during political campaigns
D.the reliability of the news on social media
（2）The underlined phrase in paragraph 2 is closest in meaning to " ____ ".
A.enhance
B.define
C.assess
D.share
（3）According to the Barna survey，Americans think that the"fake news"problem is mainly caused by  ____ .
A.readers' outdated values
B.readers' misinterpretation
C.journalists' made-up stories
D.journalists' biased reporting
（4）What can we infer from the article？ ____
A.Young people have realized that it is their duty to uncover the truthfulness of social media.
B.Social media provides young people with easy access to news and allows them to re-share news at their will.
C.ompared with the older generation，young Americans are more skillful at distinguishing fact from fiction online.
D.Young people can't live without social media，which is making them become more engaged in politics than ever before.