氨基酸旋光法定年;氨基酸消旋法测年, 氨基酸旋光法定年,氨基酸消旋法测年

Beginner A: how old is Keith? B: hes 21. how old is James? A: hes a year older than Keith, but he looks younger. B: hows your father? A: hes fine. He retired last week. Its turning poing in his life. Now he can relax and enjoy his retirement. B: he

发表于:2018-12-02 / 阅读(246) / 评论(0) 分类 情景英语口语100主题

One of the leading researchers in the field of protein folding is David Baker of the University of Washington, in Seattle. 西雅图华盛顿大学的David Baker是蛋白质折叠领域研究者的领军人物之一。 For the past 20 years he and hi

发表于:2018-12-05 / 阅读(196) / 评论(0) 分类 经济学人科技系列

A-B-C METHOD OF MANAGING ATTITUDES As an airport skycap checked through a customer at curbside, he accidentally knocked over the man's luggage. He quickly collected the fallen bags and apologized for the mishap. Unappeased, the traveler burst into a

发表于:2018-12-07 / 阅读(379) / 评论(0) 分类 每天一点英文

While on an expedition in western China twenty years ago, some explorers discovered the mummies of a tall, red-haired people. Though estimated to be nearly 4,000 years old, the corpses were quite well

发表于:2018-12-08 / 阅读(402) / 评论(0) 分类 赖世雄中级美国英语

Education Report - Debating the Best Way to Learn a Language This is the VOA Special English Education Report. What is the best way to learn a new language? A small study of foreign language learning in adults compared two methods. One is known as th

发表于:2018-12-16 / 阅读(159) / 评论(0) 分类 2012年VOA慢速英语(八)月

THIS IS AMERICA - Theater for the Blind; Suzuki Method; Gluten-Free Foods JUNE SIMMS: Welcome to THIS IS AMERICA in VOA Special English. I'm June Simms. CHRISTOPHER CRUISE: And I'm Christopher Cruise. This week on our program, we visit a theater that

发表于:2018-12-16 / 阅读(184) / 评论(0) 分类 2012年VOA慢速英语(八)月

我上个月坐火车到纽约去看朋友,上车后刚要坐下,旁边座位上的女乘客就开始很大声的自言自语,看上去精神好像不太正常,吓得我只好在过道对面远远地坐下。 后来我注意到,每次有人要

发表于:2018-12-16 / 阅读(257) / 评论(0) 分类 美国习惯用语

Researchers Genetically Modify Corn to Increase Nutrition Researchers in the United States say they have discovered how to genetically engineer corn to produce a kind of amino acid usually found in meat. The result is a food with increased nutrition

发表于:2018-12-18 / 阅读(250) / 评论(0) 分类 2017年VOA慢速英语(十)月

Books and Arts;New film 文艺;新片上映 Method in the madness 疯狂中的理智 A searching look at what caused the split between Freud and Jung 深度挖掘:弗洛伊德、荣格决裂的原因 Psychoanalysis, as practised by Carl Jung and

发表于:2018-12-31 / 阅读(278) / 评论(0) 分类 经济学人文艺系列

Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b

发表于:2019-01-03 / 阅读(260) / 评论(0) 分类 医务英语

The Internet and social media are proving to be a double-edged sword. While they expand the possibilities of commerce and information-sharing, they are also used by terrorists(恐怖分子) to recruit members, to promote hate, and even to reveal ways

发表于:2019-01-06 / 阅读(219) / 评论(0) 分类 英语新闻

[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Description: Age of Japan is an incredible puzzle entertainment, which shines with unique graphics. All 40 game levels are rendered with Japane...

发表于:2019-01-08 / 阅读(281) / 评论(0) 分类 Daily Free Games

[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Description: Age of Japan is an incredible puzzle entertainment, which shines with unique graphics. All 40 game levels are rendered with Japane...

发表于:2019-01-08 / 阅读(314) / 评论(0) 分类 Daily Free Games

Where Do We Come From? 我们来自哪里? Would you like to know where your ancestors came from? British and American scientists may have found answers for you. They have developed a new algorithm to study deoxyribonucleic acid, also known as DNA --

发表于:2019-01-12 / 阅读(214) / 评论(0) 分类 2014年VOA慢速英语(八)月

Children Learn to Play Music by Listening in Suzuki Method Five-year-old Hannah Mei Steury started violin lessons two months ago. Her teacher, Stephanie Flack, says Twinkle, Twinkle Little Star is the first song children learn to play. Its a very sim

发表于:2019-01-13 / 阅读(193) / 评论(0) 分类 VOA标准英语2012年(七月)

A Step Closer to Major HIV Prevention Method A U.S. government panel has recommended the use of a once daily pill to help prevent HIV infection. The pill has been shown to be very effective in studies. The Food and Drug Administration, the FDA, now h

发表于:2019-01-13 / 阅读(215) / 评论(0) 分类 VOA标准英语2012年(五月)

SAF New Fire-Building Method Reduces Air Pollution With their megaphones and orange uniforms, these fieldworkers do not go unnoticed. This is Fine Town, a township south of Johannesburg. Every day, the fieldworkers walk around the townships to show t

发表于:2019-01-13 / 阅读(251) / 评论(0) 分类 VOA标准英语2012年(三月)

The same space seems shorter as we grow older, in youth we may have an absolutely new experience, subjective or objective, every hour of the day. Apprehension is vivid,retentiveness strong, and our re

发表于:2019-01-16 / 阅读(296) / 评论(0) 分类 阅读空间

big macs,big/large-cap stock,mega-issue 大盘股 offering,list 上市 bourse 证交所 corporate champion 龙头企业 Shanghai Exchange 上海证交所 pension fund 养老基金 mutual fund 共同基金 hedge mutual fund 对冲式共同基金 share

发表于:2019-02-06 / 阅读(205) / 评论(0) 分类 实用英语

Traditional Teaching Method Do your teachers still use traditional techniques to teach you nowadays? A revol- ution in teaching techniques is required now. In the past, we just took it for granted that a teacher' s aim was to teach the students all t

发表于:2019-02-08 / 阅读(216) / 评论(0) 分类 英语作文
学英语单词
4-D chart
a man's man
a sharp tongue
air and variations
airjacket
all-haillie
alumino-silicate brick
Ballantyne Str.
be past it
Benedict-Webb-Rubin equation
besped
Bismethin
Black Vernacular
book-building
borax-bead
carmalum
catte
cheilosporum cultratum multifidum
coated paper
collection of water
complete quotient
CONSOLEX
constitutive enzymes
cubard
degree of obscuration
diamond square diamond method
dimensional precision
disc shredder
donor level
double shank ladle
double sided pattern plate
Drysol
dwarf fan palm
earth-grine
earth-shaker
equitable and rational
equitable jurisdiction
eur
explorationists
extremal distribution
F-center
factory agreement
fast neutron exposure
fling to
Fourneau 270
gets cut
Glochidion lanceolarium
hilar appendage
hood webbing
hospitality
humpback
income consumption curve
initial condition
justa
Kreuzotter
Ladainha
lap of luxury
lauroyl peroxide
lifo/fifo transaction reconciliation
line of machines
malignant hyperpyrexia
maschlers
Milfiber
mis-used
molehill
neck bend
oberholtzer
off hour
over-crossing
pa-kua
period of inspection and repairing
phonetic paralyses
pipe roll(er)
Pole
poling board
pountneys
primary cutaneous neisseria gonorrhoeae infection
rare earth doping
red tide disaster
reproduction positive model
resource time
round-headed leeks
salivary gland chromosome
seed strand planter
Serpate
silicate lining layer
specific television
specimen collection
spermatin(e)
state-like
stitchup
stortings
Strobochrysin
surface of translation
synthetic action
thermodynamic suppression head
trianglists
visual meterological conditions
vulvate
wave potential energy
wayl
zinc ore calamine