产沙率

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres a Native American site in Ohio that appeared to be a fort. But recent discoveries by archaeologists at the University of Cincinnati show thats n

发表于:2018-12-24 / 阅读(167) / 评论(0) 分类 Scientific American(九)月

Roughly 1,000 years ago, Europe enjoyed several centuries of balmier average temperatures. Dubbed the Medieval Warm Period, it was the last time before the present that agriculture could flourish in Greenland. This era also provided fodder for countl

发表于:2018-12-24 / 阅读(161) / 评论(0) 分类 Scientific American(十一)月

Section B Trends for the 21st Century What problems will our world encounter in the next 1,000 years? Social scientists and economists, farming experts and environmentalists pose this question and exa

发表于:2018-12-29 / 阅读(165) / 评论(0) 分类 新视野大学英语读写教程(1)

(MA) Look at our topographical map and you'll see that the middle third of the North American continent --- from the Rocky Mountains almost to the Mississippi River --- is pretty flat. This is the Great Plains. This kind of area is sometimes called

发表于:2018-12-30 / 阅读(137) / 评论(0) 分类 托福听力短文

About 110 million years ago, a large plant-eating dinosaur covered with sharp points walked the land. Called a nodosaur, it is now the best example of its kind ever found. This new species of dinosaur is being called a one-in-a-billion discovery. Rec

发表于:2019-01-02 / 阅读(169) / 评论(0) 分类 2017年VOA慢速英语(五)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. As scientists delve deeper beneath the oceans surface, they find bizarre creatures that have adapted to harsh and extreme environments. Now comes a new o

发表于:2019-01-08 / 阅读(182) / 评论(0) 分类 Scientific American(四)月

Lake Sediment Could Better Date Ancient Finds Radiocarbon dating is the best-known and most widely used method to determine the age of organic material, such as bone or wood or plant matter. All such material contains radioactive carbon atoms, known

发表于:2019-01-14 / 阅读(143) / 评论(0) 分类 VOA标准英语2012年(十月)

What then of manned space exploration? 那载人的空间探索呢? The government recently announced plans to return to the moon by 2024. 美国政府最近宣布了2024重返月球的计划。 The successful conclusion of that mission will result

发表于:2019-01-18 / 阅读(144) / 评论(0) 分类 TED演讲商业篇

The 9/11 terrorist attack in New York not only killed people. It also killed local businesses, too, as many residents and companies moved out of the devastated area. 10 years on things are finally recovering. One Chinese restaurant has been part of t

发表于:2019-01-19 / 阅读(169) / 评论(0) 分类 世界各地新闻集锦

Advanced - Just In Time Strategy (E0047) A: I called this meeting today in order to discuss our manufacturing plan. As Im sure youre all aware,with the credit crunch, and the global financial crisis,were obligated to look for more cost efficient ways

发表于:2019-01-20 / 阅读(150) / 评论(0) 分类 纯正地道美语

The geology of the planet 地球的地质情况 Welcome to the Anthropocene 欢迎来到人类纪 Humans have changed the way the world works. Now they have to change the way they think about it, too 人类改变了世界运行方式,现在,人类不

发表于:2019-01-26 / 阅读(202) / 评论(0) 分类 经济学人综合

By Sabina Castelfranco Rome 22 April 2008 OPEC Secretary General Abdalla Salem el-Badri says the cartel plans to boost its oil production targets by five million barrels a day by 2012. He was speaking on the final day of the International Energy Foru

发表于:2019-01-31 / 阅读(180) / 评论(0) 分类 VOA常速英语2008年(四月)

D src=sound/104.rm width=200 height=50 type=audio/x-pn-realaudio-plugin controls=

发表于:2019-01-31 / 阅读(196) / 评论(0) 分类 VOA2004(上)--各类新闻

TIANJIN, May 27 (Xinhua) -- China's first state-level animation production base opened Friday in northern Tianjin Municipality, with a total investment of 4.5 billion yuan (690 million U.S. dollars). More than 180 firms have signed up for animation p

发表于:2019-02-03 / 阅读(234) / 评论(0) 分类 英语新闻

CANBERRA, Oct. 14 (Xinhua) -- Australian scientists have made the alarming discovery that sea levels have risen more in the past century than at any other comparable period in the past 6,000 years. Researchers from the Australian National University

发表于:2019-02-06 / 阅读(193) / 评论(0) 分类 英语新闻

BEIJING, Feb. 27 (Xinhua) -- Senior Chinese legislators on Monday started their second deliberation on a draft amendment to the country's Law on the Promotion of Clean Production. At the three-day bimonthly session of the Standing Committee of the Na

发表于:2019-02-11 / 阅读(182) / 评论(0) 分类 英语新闻

Saudi Arabia is signaling that it is going to boost its supply of oil on its own after failing to convince other oil producers to jointly agree to more production. Several news agencies reported Saturday that the Saudis could increase their oil produ

发表于:2019-02-11 / 阅读(199) / 评论(0) 分类 英语新闻

primary capital 基本资金;基础资本 primary input 初期投入的资源 primary lien 第一留置权 primary listing 第一上市 primary market 初级市场;基本市场;第一市场 prim

发表于:2019-02-17 / 阅读(132) / 评论(0) 分类 财会英语

Saying Good-bye to Cambridge Again --by Xu Zhimo 再别康桥 徐志摩 Very quietly I take my leave As quietly as I came here; Quietly I wave good-bye To the rosy clouds in the western sky. The golden willows by the riverside Are young brides in the

发表于:2019-02-18 / 阅读(185) / 评论(0) 分类 阅读空间

世界本没有长难句,修饰成分多了,便有了长难句。 阅读速度大部分来于短时间内理解长难句的能力。 大家在看长难句的时候,多思考,一个句子为什么这么长,常见的修饰成分到底有哪些?

发表于:2019-02-18 / 阅读(183) / 评论(0) 分类 托福英语
学英语单词
abelia
acceleration anode
Aeschynomene
amorim
Angle band
anisotropic magentoresistance (amr)
Anoectochilus chapaensis
ant-c
arctic front
astroglide
be noted as
blind portion retina
brothel keepers
BSSO
calc aphanite
Cavergno
challoir
clonalities
Cortinarius violaceus
cotter key
crimes against social administration
crinklier
Dataphone Digital System
detechnicalized
don't bother me
e-security
Elaeocarpaceae
embrocated
enclosed medium
even number train
f-ings
field protected
flexible take-off (fto)
flouncingly
flush
frigorie
front end loaders
fuel element building
fuel rod coating
fund cost
gofs
Gwabegar
heath-bell
heeling rudder
home improvements
infomediaries
Isachne globosa
juntas
kata-thermometer
lever weigth
load cable
Lysimachia physaloides
Management Best Practice
material quantity control
meadow land
megestrol acetate
membrane responsive curve
memory cards
mesohydrophyte
Muller Creek
multideity
musack
navicula robertsiana
nonallergy
normalized covariance
normally energized stick relay
nows
orange-bellied
overseas market development reserve
pedophilia
pericardiac branch
pitch indicator
pneumatic rammer
point the bone
pot car
production department expenses
radiation protection officer
respilyser
rosin flux
rotary harrow heating element
sabaliter
sand-flat
senile blepharochalasis of upper eyelid
sharp wind
solid image microscope
stichaeids
supplementary layer of felt
SUROBS
talk-listen button
test data recorder
text editing
three-beam
transient-divided reset
tribenzoylmethane
u.v.b.y. system
ultrafashiinable
umblication of lens
utma
virtual safety dose
water soluble inorganic substance
wooden double block