感作用,强化效应

By Nancy Steinbach Broadcast: November 19, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. When scientists want to test the effectiveness of a new drug, they usually divide

发表于:2018-12-15 / 阅读(101) / 评论(0) 分类 VOA2003(下)-环境与健康

From NPR News in Washington, I'm Barbara Klein. The Mississippi River at Natchez is now closed to shipping traffic. The Coast Guard made the move to avoid putting more stress on the swollen river's levees, but it also closes off the major artery for

发表于:2018-12-17 / 阅读(128) / 评论(0) 分类 2011年NPR美国国家公共电台5月

Benjamin Frankin wondered about(at) lightning. He combined his curiosity with imagination and carried out his well-known experiment to show that lightning and an electric spark are the same thing. Cur

发表于:2018-12-30 / 阅读(237) / 评论(0) 分类 自考英语(一)78讲

今年7月,14岁的美国华裔少年刘继打破老虎伍兹的纪录,成为美国青少年高尔夫锦标赛史上最年轻的冠军,同时刷新老虎伍兹保持了19年的纪录。刘继出生在纽约州一个只有11万人口的小城市史

发表于:2019-01-09 / 阅读(124) / 评论(0) 分类 实用英语

1. President Barack Obama spent part of his day talking with House republicans. The meeting at the White House did not bridge partisan divides, but officials say it was still beneficial to sit down and talk in a non-confrontational environment. 2. Of

发表于:2019-01-11 / 阅读(147) / 评论(0) 分类 美联社新闻一分钟2011(六月)

Iraq Reels Under Intensifying Political Divide Rising anti-government protests, mostly by Sunnis, have rocked Iraq since December. Many Sunnis are calling for Shi'ite Prime Minister Nouri al-Maliki to step down. They also want the release of detainee

发表于:2019-01-13 / 阅读(76) / 评论(0) 分类 VOA标准英语2013年(一月)

Imagine that youre looking at your company-issued smartphone and you notice an e-mail from LinkedIn: These companies are looking for candidates like you! You arent necessarily searching for a job, but youre always open to opportunities, so out of cur

发表于:2019-01-28 / 阅读(140) / 评论(0) 分类 阅读空间

BEIJING, Feb. 7 (Xinhua) -- China will raise the retail prices for gasoline and diesel by 300 yuan (47.53 U.S. dollars) per tonne starting Feb. 8, the country's top economic planner said Tuesday. The benchmark retail price of gasoline will be lifted

发表于:2019-01-31 / 阅读(97) / 评论(0) 分类 英语新闻

Didi Kuaidi, the Chinese ride-hailing app, has become an investor in its Indian counterpart Ola raising the stakes as Uber tries to gain a greater toehold in Asia. 中国叫车应用滴滴快的(Didi Kuaidi)已成为印度叫车应用Ola的投资者,

发表于:2019-02-01 / 阅读(106) / 评论(0) 分类 阅读空间

LOS ANGELES/SHANGHAI, Feb 27 (Reuters) - Daily-deals website Groupon goes live in China on Monday, bringing its popular brand of Internet retail to the world's most populous nation. GaoPeng.com, funded by Groupon, the Tencent (0700.HK) Collaboration(合

发表于:2019-02-05 / 阅读(71) / 评论(0) 分类 英语新闻

今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示,Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革,但是又担心改革可能带来的副

发表于:2019-02-05 / 阅读(96) / 评论(0) 分类 英语每日一词

As the development of the society, people want to conquer the environment, they use the high technology to change the environment, when people are satisfied with what they did to the nature, the nature is starting to teach human being a lesson. In th

发表于:2019-02-06 / 阅读(92) / 评论(0) 分类 英语作文

Doctor Li Lailai, China Director of the World Resources Institute says sustainable supplies of water and energy are intensifying in China as human demand continues to grow. She says water conservation is becoming a critical issue. We do have a progra

发表于:2019-02-07 / 阅读(66) / 评论(0) 分类 英语新闻

今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示,Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革,但是又担心改革可能带来的副

发表于:2019-02-13 / 阅读(150) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是potent。Potent形容词,意思是有效的、强有力的 。Fentanyl, a super potent synthetic drug at the center of a new overdose crisis in America, is presenting huge challenges for law enforcement officials. 处在美

发表于:2019-02-16 / 阅读(71) / 评论(0) 分类 英语单词荟萃

VATICAN CITY, Feb.28 (Xinhua) -- The resignation of Pope Benedict XVI came into effect at 8 pm local time (1900 GMT) on Thursday, who had left the Vatican by helicopter for the papal vacation retreat in south Rome earlier in the afternoon. The pope h

发表于:2019-02-17 / 阅读(105) / 评论(0) 分类 英语新闻

UNITED NATIONS, Nov. 5 (Xinhua) -- The Food and Agriculture Organization (FAO) issued the latest Food Price Index, saying rising food prices last month were spurred by weather-driven concerns about sugar and palm oil supplies, a UN spokesman told rep

发表于:2019-02-18 / 阅读(85) / 评论(0) 分类 英语新闻

EVEN people who dont normally care much for football tune in to the Super Bowl to watch the best commercials Madison Avenue can dream up. The most talked about this year was Chryslers gritty tribute to the economic revival of America and Detroit. Mor

发表于:2019-02-24 / 阅读(75) / 评论(0) 分类 经济学人综合

完形填空(以下简称完形)是一个不断解码字符编码的思维过程,出题人不断的挖空制造困难来迷惑读者,因此在阅读过程中,正确率和速度不仅受读者所掌握的基本语言要素(词汇、语法)的影响

发表于:2019-02-25 / 阅读(91) / 评论(0) 分类 考研英语

Mobile phones 手机 The rise of the cheap smartphone 廉价智能手机的崛起 As smartphones reach the masses, a host of vendors are eager to serve them 智能手机普及化,大小手机厂商开始在低端市场兵戎相向 NEXT month Briton

发表于:2019-03-09 / 阅读(158) / 评论(0) 分类 经济学人商业系列
学英语单词
absentation
after hatch
agrophysicist
american institute of aeronautics and astronautics
anion exchange resin
Anopheles maculipalpis
be tarred with the same brush
biophysicss
brakemakers
breath of air
Broca's center
buck tooth
can-you-believe-it
catenoidal horn
charpai
cholesterollowering
collaborate
containerized shipment
control variable
cosmeticises
criterion of streamline motion
crystalline semiconduting compound
curmudgeon
deflore
diesel generator breaker
dry your eyes
emanates from
entrance
euonymus verrucosoides loes.
foreign imperfection
g factor of nucleus
GELICHIIDAE
grab jaw
Grynfelt's triangle
Hentenian
horsehair hand brush
immerser
inclined revolving cylinder sifter
indirect list entry key
interstate commerce act
Iris laevigata
jacobi's poikiloderma
jump shunting
labyrinth gland
lesing out
linear stress
low pressure pneumatic tyre
Maddison
make white black white
metrified
mineralogies
mTERF
multipolar neuroblast
musculus obliquus
nominal shock pulse
nonacquiescence
nonlinear relationship
nonrepetitively
northeasterly
on-the-air
oscillion
output cathode
parasitogenic
pericapsulitis
Phuoc Long
picks someone up
Pimpinella achilleifolia
powder up
principalship
process colors
provide tilth to a soil
Quang Thuan
rails and accessories
refine sugar
retargetting
Rodinia
Sabanero wheat
Sandnessjφen
semidemocratic
Serbo-
Seyhan
shipworkers
short-hold modem
showin'
silica microsphere
sliding poise
superdeformation
taeniacidal
taking a break
televisionbroadcasting station
temenos
that's more like it
the Sultan
towing bill
tri hydroxyethyl rutoside troxerutin
turflike
uncustomarily
Up yours
viscidity of thought
Wiggensbach
xanthoplanine
y-schizandrin