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【单选题】
A new survey by Harvard University finds 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 source, Not a president’s social media platform. Most Americans rely on social media to check daily headlines. Yet as distrust has risen toward 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 44 percent of Facebook users rarely or never trust news from the media giant. Young people who are digital natives are indeed becoming more skillful at separating fact from fiction in cyberspace. A Knight Foundation focus-group survey of young people between ages 14and24 found they use “distributed trust” to verify stories. They cross-check sources and prefer news from different perspectives—especially those that are open about any bias. “Many young people assume a great deal of personal responsibility for educating themselves and actively seeking out opposing viewpoints,” the survey concluded. Such active research can have another effect. A 2014 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 intimately 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 research group found 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 say 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 the heart of the issue. “This indicates there is a real personal responsibility in counteracting 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. The Barna survey found that a main cause for the fake news problem is
A.
readers outdated values.
B.
journalists ’ biased reporting
C.
readers ’ misinterpretation
D.
journalists ’ made-up stories.
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【单选题】直升机上,可以救助伤员的是_____。
A.
救助吊带
B.
救助吊篮
C.
救助担架
【单选题】下列句子中使用的修辞手法与其他三句不同的一项是( )
A.
开始很像极小的鱼,眼睛大而黑,身体下面有一种鳍状物,由两个前腿连在一起组成。
B.
鱼形的幼虫来到孔外,行进时它的外套马上就裂开了,它从前到后脱去外套,但这脱下的外套还像丝线一样悬着,幼虫依靠它附着在树枝上。
C.
它已经借安全带做好了准备,以防在硬地面上摔伤。
D.
从放大镜中,我看见它挥着镐向下挖掘,并将土抛出地面。
【简答题】—锂辉石的主要成分是Li 2 O·Al 2 O 3 ·4SiO 2 ,还含有FeO、、MgO等。 以 —锂辉石为原料制备碳酸锂的一种流程如下: 已知:①部分金属氢氧化物开始沉淀和完全沉淀的pH: 氢氧化物 Fe(OH) 3 Al(OH) 3 Mg(OH) 2 开始沉淀pH 2.7 3.7 9.6 完全沉淀pH 3.7 4.7 11 ②Li 2 CO 3 在不同温度的溶解度如下表: 温度/℃ ...
【判断题】JIT生产是预先生产产品使得顾客不必等待。
A.
正确
B.
错误
【单选题】以下句子中,“看”的用法与其他三个不同的是
A.
你可以试试看。
B.
你看到了吗?
C.
我看了又看,还是没有找到喜欢的。
D.
左看看,右看看。
【判断题】JIT生产是预先生产产品使得顾客不必等待。( )
A.
正确
B.
错误
【多选题】之所以会出现“此中有真意,欲辨已忘言。”,可能是因为()
A.
诗人处于醉酒状态
B.
让诗歌充满哲理性
C.
“真意”不可言传,只能意会
D.
避免破坏诗歌的美感
【单选题】JIT生产是( )。
A.
水池式
B.
推动式
C.
瓶颈式
D.
拉动式
【简答题】碳酸锂广泛应用于陶瓷和医药等领域。已-锂辉石(主要成分为Li 2 O ·Al 2 O 3 ·4SiO 2 )为原材料制备Li 2 CO 3 的工艺流程如下: 已知:Fe 3+ 、Al 3+ 、Fe 2+ 和Mg 2+ 以氢氧化物形式完全沉淀时,溶液的PH分别为3.2、5.2、9.7和12.4;Li 2 SO 4 、LiOH和Li 2 CO 3 在303K下的溶解度分别为34.2g、12.7g和1....
【简答题】碳酸锂广泛应用于陶瓷和医药等领域,以β-锂辉石(主要成分为Li 2 O·Al 2 O 3 ·4SiO 2 )为原料制备Li 2 CO 3 的工艺流程如下: 已知:Fe 3+ 、Al 3+ 、Fe 2+ 和Mg 2+ 以氢氧化物形式完全沉淀时,溶液的pH分别为3.2、5.2、9.7和12.4;Li 2 SO 4 、LiOH和Li 2 CO 3 在303K下的溶解度分别为34.2 g、12. 7 g和...
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