时间:2018-12-16 作者:英语课 分类:VOA标准英语2013年(三月)


英语课

 


Online Universities Offer Free Classes to Millions



An engineering class at Stanford University is being recorded as an online course. The university is offering 30 to 40 free courses online, and more than 1.5 million students have enrolled 2. There are regular schedules, homework and tests but those enrolled do not earn credit toward a university degree. John Mitchell, the Vice 3 Provost for Online Learning at Stanford, says the university offers these course as a public service.


“We’re teachers. This is what we love to do. If we can see people around the world learning from us, that’s rewarding. That’s what gets us up in the morning,” Mitchell said.


These free courses are also meant to entice 4 students to apply to Stanford or enroll 1 in other online classes that are not free. While online education is expanding the reach of major universities, Mitchell says they will not replace the on-campus experience.


But David Stavens, who taught at Stanford and recently co-founded a free online university called Udacity, says a quality education is becoming too expensive for most people.


“It’s a good system for a lot of people but there is another set of people who are equally smart, equally determined 5, equally hard working but who don’t quite fit into the mold, and it’s an unfair system for them,” Stavens said.


While Udacity is a for-profit company, the vast majority of its courses are free and they are developed specifically for online students. They include short videos, followed by exercises designed to engage the student and reinforce the lesson.


Students can pay for video conference tutoring or use the free chat rooms to discuss problems with their peers.


While the number of universities offering online classes is growing, some classes are free and others are not. The Khan Academy is a non-profit free website that contains over 3,500 video classes in a variety of languages and is utilized 6 by six million people each month.


Salman Khan founded the company. He says it wasn't difficult to recruit donors 7 like the Bill and Melinda Gates Foundation by offering a quality education to everyone in the world. 


“Anytime, with so little incremental 8 on your part, you can create essentially 9 an unlimited 10 potential on someone else’s part, I think it would be a shame not to do it,” Khan said.


Critics say there are flaws with online education, citing studies that show a higher drop out rate for online students. But proponents 11 say the evolving technology is coming together to open up new educational opportunities as never before to millions around the world. 




1 enroll
v.招收;登记;入学;参军;成为会员(英)enrol
  • I should like to enroll all my children in the swimming class.我愿意让我的孩子们都参加游泳班。
  • They enroll him as a member of the club.他们吸收他为俱乐部会员。
2 enrolled
adj.入学登记了的v.[亦作enrol]( enroll的过去式和过去分词 );登记,招收,使入伍(或入会、入学等),参加,成为成员;记入名册;卷起,包起
  • They have been studying hard from the moment they enrolled. 从入学时起,他们就一直努力学习。 来自《简明英汉词典》
  • He enrolled with an employment agency for a teaching position. 他在职业介绍所登了记以谋求一个教师的职位。 来自《简明英汉词典》
3 vice
n.坏事;恶习;[pl.]台钳,老虎钳;adj.副的
  • He guarded himself against vice.他避免染上坏习惯。
  • They are sunk in the depth of vice.他们堕入了罪恶的深渊。
4 entice
v.诱骗,引诱,怂恿
  • Nothing will entice the children from television.没有任何东西能把孩子们从电视机前诱开。
  • I don't see why the English should want to entice us away from our native land.我不明白,为什英国人要引诱我们离开自己的国土。
5 determined
adj.坚定的;有决心的
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
6 utilized
v.利用,使用( utilize的过去式和过去分词 )
  • In the19th century waterpower was widely utilized to generate electricity. 在19世纪人们大规模使用水力来发电。 来自《简明英汉词典》
  • The empty building can be utilized for city storage. 可以利用那栋空建筑物作城市的仓库。 来自《简明英汉词典》
7 donors
n.捐赠者( donor的名词复数 );献血者;捐血者;器官捐献者
  • Please email us to be removed from our active list of blood donors. 假如你想把自己的名字从献血联系人名单中删去,请给我们发电子邮件。
  • About half this amount comes from individual donors and bequests. 这笔钱大约有一半来自个人捐赠及遗赠。 来自《简明英汉词典》
8 incremental
adj.增加的
  • For logic devices, the incremental current gain is very important. 对于逻辑器件来说,提高电流增益是非常重要的。 来自辞典例句
  • By using an incremental approach, the problems involving material or geometric nonlinearity have been solved. 借应用一种增量方法,已经解决了包括材料的或几何的非线性问题。 来自辞典例句
9 essentially
adv.本质上,实质上,基本上
  • Really great men are essentially modest.真正的伟人大都很谦虚。
  • She is an essentially selfish person.她本质上是个自私自利的人。
10 unlimited
adj.无限的,不受控制的,无条件的
  • They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。
  • There is no safety in unlimited technological hubris.在技术方面自以为是会很危险。
11 proponents
n.(某事业、理论等的)支持者,拥护者( proponent的名词复数 )
  • Reviewing courts were among the most active proponents of hybrid rulemaking procedures. 复审法院是最积极的混合型规则制定程序的建议者。 来自英汉非文学 - 行政法
  • Proponents of such opinions were arrested as 'traitors. ' 提倡这种主张的人马上作为“卖国贼”逮捕起来。 来自辞典例句
学英语单词
abortiva variola
allegan
amblyeleotris periophthalma
animal husbandry
application for drawback
autoselecting
basic atomic group
be a scorn to
bear-trap
beechy
bepraising
brans-dicke
break-even point
British Radio Communication
broglies
Brumado
Buendia, Embalse de
can-carrier
catch lever
cinoas
clathtate
clowning around
copper stripping electrolysis
Crotalus viridis
decking level
deconjugations
dennisonite (davisonite)
Derrick City
differentiabilities
diplococcus of Morax-Axenfeld
double-current method
El Bejuco
end-of-field marker
equity-warrants
finds oneself
flash of wit
force due of viscosity
gate current degradation
give tongue
glooming
half yearly account
hexaferrite
huskershredder
inertinites
inomyxoma fibromyxoma
Isonin
kerak
kolstad
lay of rope
Lena Trough
limit position of a link
lining method
mafes
malonyl thiourea
megalithic age
methidium
mixed sleep apnea
modem connection
mushroom cloud
notacaphylla chinensiae
occipitoiliac
older sisters
one bath two stage process
overpraises
pay honor to
pentamethazene
Phospatidylcholine
play close to the vest
premonitory pains
primary productivity
proxy attribute
psychic deafness
quarter wave length
queue type
reheating cycle
rim blight
Sabbathesque
sagueiro
sand shell moulding
sand stargazer
saracenis
sillenite
simultaneous prosperity
softball
spread oneself
Stellaria irrigua
stellasteropsis colubrinus
strategic communication
student experience
succinanilide
sunnyside up
take-up bearing
terminal wire
turbo fan
twin engined
unpathetic
vibration ramming
virtual disk system
wack
woodburners
zero power level
zero-water