时间:2019-01-08 作者:英语课 分类:Scientific American(六)月


英语课

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute?


When the internet first got kicking, some scholars of democracy and civil society thought that online discussions could create what they called a "conversational 1 democracy": an ongoing 2 town hall without bricks and mortar 3. But the internet may not be as democratic as they'd imagined, according to a study in the journal Communication Research.


Researcher Itai Himelboim gathered eight million messages posted to 35 political and philosophical 4 newsgroups—like alt.politics.usa—over a six-year period. And he analyzed 5 the connections among the messages. Turns out that 50 percent of all replies were directed at just 2 percent of people who started threads, and who thus came to control the discussion. And the larger the newsgroup, the more polarized this effect became.


But these newsgroup dominators weren't posting much original content. Sixty percent of their posts were just content lifted from traditional news sources like the New York Times. Which is good news for the news business, the author says. Because it means people still want someone else to search out information and deliver it. After all, isn't that one reason why you listen to this podcast?


Thanks for the minute. For Scientific American's 60-Second Science, I'm Christopher Intagliata.



adj.对话的,会话的
  • The article is written in a conversational style.该文是以对话的形式写成的。
  • She values herself on her conversational powers.她常夸耀自己的能言善辩。
adj.进行中的,前进的
  • The problem is ongoing.这个问题尚未解决。
  • The issues raised in the report relate directly to Age Concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。
n.灰浆,灰泥;迫击炮;v.把…用灰浆涂接合
  • The mason flushed the joint with mortar.泥工用灰浆把接缝处嵌平。
  • The sound of mortar fire seemed to be closing in.迫击炮的吼声似乎正在逼近。
adj.哲学家的,哲学上的,达观的
  • The teacher couldn't answer the philosophical problem.老师不能解答这个哲学问题。
  • She is very philosophical about her bad luck.她对自己的不幸看得很开。
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
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学英语单词
acropetal succession
adventitial neuritis
aggressive digital papillary adenoma and adenocarcinoma
allecting
aughts
beaming effect
beta-transformtion
blueeyed
bond broker
borchgrevink coast
bounding layer
Brano
butt junction
carbobenzoyl
Carolles
charge coupled delay line
Chechen
clean condition
codesending radiosonde
cold-rolling lubricant
collapsible containers
collection of tax
cone mandral
continued education
Dhola
distant place
ecological isolation habitat isolation
edessas
edge-oriented grammar
electric arc-gas jet cutting
enquiry call facility
excitatory neuron
extrude angle
exuvial fluid
foully
generating the arc
glycolytic ferment
hematochezias
herpes zoster ophthalmicus
herpetological
hot stoves
hypertonic syndrome
indian calendar
indurative pneumonia
inerm
interdigitations
interphase of mitosis
kany
Keith process (for lead refining)
kelsang
klipsch
leading-out wire
Leutasch
lieutenant JG
looped pipeline
magnetic oscillator
mount shermen
multichannel monitoring system
Mālri
near-bankruptcies
Novotulka
operation research
Oxyspirura
Payamlι
Perivoli
photoiniferter
pomponio
Popovtsy
premature separation of placenta
product of industry
pseudoglobullin
reciprocating grate stoker
renewal plan
reversible claw
reversing shaft
rigid metallic conduits
sapphire wedding
satty
scrambled
semicircular key
semischolarly
servo curve plotter
Siegsdorf
sight vane alidade
snow depthmeter
Sutton County
tenth-grader
tetramorium amium
the horses
the other life
thermal mineral water
threshing-machines
tightly-knit
total number of root hairs
turral
valuable
vertex of surface
well total depth
whistle in the dark
White-Hooded
winebox
work stoppages