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This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. This will just take a minute. Youve probably chased a fly or two around the house this summer. And, chances are, it took a few swings before you brought down the buzzing nuisance.

发表于:2018-12-02 / 阅读(245) / 评论(0) 分类 Scientific American(八)月

This is the VOA Special English Health Report. Every few years, two groups do a study of how many Americans wash their hands after using the toilet. These groups are the American Society for Microbiology and the American Cleaning Institute, formerly

发表于:2018-12-07 / 阅读(173) / 评论(0) 分类 2010年VOA慢速英语(九)月

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2018-12-12 / 阅读(235) / 评论(0) 分类 北美小学生英语一年级教材(牛津英语教材)

World Hepatitis Day is observed on May the 19th. It aims to increase awareness worldwide of the diseases hepatitis B and hepatitis C. Its hope is to encourage the prevention and diagnosis of these two diseases, and increase the number of people who r

发表于:2018-12-29 / 阅读(176) / 评论(0) 分类 英语课程学习计划和讲义

EDUCATION REPORT - November 28, 2002: Foreign Student Series #11Health Insurance By Nancy Steinbach This is the VOA Special English Education Report. We continue our series of reports about how foreig

发表于:2019-01-04 / 阅读(162) / 评论(0) 分类 教育与新闻

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(196) / 评论(0) 分类 Scientific American(八)月

Competitors from across the globe are in Senegal's capital, Dakar, for the Francophone World Scrabble Championships. Naomi Schwarz reports from the tournament that Senegal boasts some of the world's best players, despite a population with a 40 perce

发表于:2019-01-09 / 阅读(157) / 评论(0) 分类 VOA标准英语2008年(七月)

By Carol Pearson Washington, DC 20 February 2007 watch Autism report Scientists working to solve the mysteries of autism say their research points to genetic causes. The results come from the largest study ever done on the disorder. The study looked

发表于:2019-01-12 / 阅读(226) / 评论(0) 分类 2007年VOA标准英语(二月)

The U.S. Special Inspector General for Iraq Reconstruction has criticized the State Department for its management of nearly $3 billion in contracts and grants in Iraq. In two reports, auditors cited weak and ineffective State Department oversight of

发表于:2019-01-13 / 阅读(297) / 评论(0) 分类 VOA标准英语2010年(一月)

The US government is considering, for the first time, the approval of a genetically-modified animal for human consumption. The animal being considered is salmon, but approval could open the door for other animals as well. Those who favor the move say

发表于:2019-01-13 / 阅读(233) / 评论(0) 分类 VOA标准英语2010年(七)月

Stomach cancer is one of the deadliest diseases, and ranks second among cancers worldwide with at least 800,000 deaths yearly. But in the United States, the number of cases has been declining, except for among one group of Americans. Glenda Reimer, h

发表于:2019-01-13 / 阅读(180) / 评论(0) 分类 VOA标准英语2010年(五)月

At Scripps Research Institute in Jupiter, Florida, scientists are working to find clues about how the human brain processes memories. Their laboratory test animal is not a chimp or a dog or a rat animals that we know can remember things it is the com

发表于:2019-01-13 / 阅读(213) / 评论(0) 分类 VOA标准英语2010年(三月)

Scientists Unravel Potato's Genetic Blueprint Scientists have decoded the genetic blueprint of the world's third most important food crop: the potato. Researchers from 26 institutions around the world worked on the project to sequence, or map, the po

发表于:2019-01-14 / 阅读(186) / 评论(0) 分类 VOA标准英语2011年(七月)

The incumbent government of Ivory Coast is rejecting the African Union's endorsement of the United Nations certified winner of November's presidential election, saying African leaders are making the situation worse and will be held accountable for a

发表于:2019-01-14 / 阅读(189) / 评论(0) 分类 VOA标准英语2011年(三月)

A new documentary from National Geographic traces the dramatic story of a lioness and her cubs struggling to survive in the Okavango Delta of Botswana. Here's a look at The Last Lions. Two mothers now battle for the survival of their young: buffalo d

发表于:2019-01-14 / 阅读(356) / 评论(0) 分类 VOA标准英语2011年(二月)

Tit for Tat针锋相对An American lady traveling in England some years ago, got into an compartment of a smoking carriage where an Englishman was smoking a pipe. For a short time she sat quietly expecting that the Englishman would stop smoking. But

发表于:2019-01-28 / 阅读(190) / 评论(0) 分类 英语小达人

72 约翰斯·霍普金斯疟疾协会 DATE=7-19-01 TITLE=SCIENCE REPORT - Johns Hopkins Malaria Institute BYLINE=Jill Moss (Start at 01'0

发表于:2019-01-30 / 阅读(231) / 评论(0) 分类 科技之光

By Phuong Tran Dakar 01 June 2007 In Senegal, a media owner is preparing to fight the government's shut down of his new private radio station. Officials say he did not follow the right procedures, but he says he is being silenced. For VOA, Phuong Tra

发表于:2019-02-03 / 阅读(191) / 评论(0) 分类 2007年VOA标准英语(六月)

Offering Substitute 提供代用品 Specimen Letters1. Offering Rayon in Place of Watered Silk提供人造丝代替水洗丝Dear Sirs,Thank you for your fax of yesterday (April 3) with your order No.456 for 5,000 metres of 100cm wide watered silk. We

发表于:2019-02-05 / 阅读(246) / 评论(0) 分类 实用英语

By Naomi Schwarz Dakar 19 May 2007 In the West African nation of Senegal, fewer than 10 per cent of people have accounts at traditional banks. Such accounts have traditionally been seen as only for the very rich. But a growing network of branches ext

发表于:2019-02-07 / 阅读(192) / 评论(0) 分类 2007年VOA标准英语(五月)
学英语单词
altitude power factor
Amygdalus mongolica
antishrinking process
arachidochin
asphalt grouting
back shot
bacterin-toxoid
balfe
Bonapar
buchons
capillary wall
central-lift agitator
circumference velocity
clapnet
class gift
coloured paper
comatosity
comply-ment
compulsory check-off
continuous discount
corymbas nipponica
counter-twilight
cutting edge clearance
dial office
dicloxin
Dry Harbour
eligibility requirements
emit into
evangelistship
ex contract
fission
fractional horse power condensing unit
get someone's hackles up
goeltz
hedda
heralds' college
high-water mark
hydraulic bulging test
immature delivery
in-seam cross-cut
inflation-linked
institutional stockholder
instrumental reason
kac moody algebra
kallert
leather boat-body-rest pads
leucite shihlunite
locally finite category
Lotzwil
metatheca fold
mineralized
miniature eletrical train staff
minuatia laricina (l.) mattf.
multiple electrode spot welding
nasus
nni (network node interface)
numbfish
ocean floor map
Ocimibundu
oil pollution emergency plan
one iron
osteochondritis deformans juvenilis dorsi
overtree sprinkler
palaeotropics
palatine sulci
pancasila
patch grafting of carotid artery
PCM-CIA
pip displacement
polar link
postaxial radials
promotants
pull at
rabbitfoot
radon-219
Rana, R.
reboxetines
Rhamnus rosthornii
Ropressor
rotary disk valve
salt concentration
show scroll bars
skeletal system, human
splachnocranium
standard sections
Styrax hemsleyanus
surveying
suspended membrane structure
symmetry properties
tautologously
technological innovation
tettigoniids
total fixed costs
tractus spino-olivalis
TSSOP
tubular vaginal speculum
Urla
venous angioma
Wartenberg's sign
wear the stripes
whimsy-whamsy
Yar Mohammad Khān