非天然同位素成分

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest

发表于:2018-12-24 / 阅读(104) / 评论(0) 分类 Scientific American(九)月

The students in the composition class were assigned the task of writing an essay on the most beautiful thing I ever saw. The student who, of all the members of the class seemed the least sensitive to beauty, handed in his paper first with astonishin

发表于:2019-01-02 / 阅读(92) / 评论(0) 分类 英文笑话

It was a very busy evening. I was doing my homework at my home. My father was writing a composition in the study room. My mother was interested in Shanghai opera. She was watching a Shanghai opera contest. The apartment was very quiet. Suddenly the l

发表于:2019-01-03 / 阅读(87) / 评论(0) 分类 英语作文

By Anjana Pasricha New Delhi 03 March 2007 Nepal's government and former Maoist rebels have begun negotiations to induct the guerrillas in an interim administration. Anjana Pasricha has this report from New Delhi on how Nepal's peace process is farin

发表于:2019-01-07 / 阅读(129) / 评论(0) 分类 2007年VOA标准英语(三月)

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar

发表于:2019-01-08 / 阅读(102) / 评论(0) 分类 Scientific American(一)月

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(十二)月

Scientists Closer to Solving Plain of Jars Mystery A new group of human remains has been uncovered on the Plain of Jars in Laos. They are believed to date back to the Iron Age, some 2,500 years ago. The Plain of Jars is in the central Lao province of

发表于:2019-01-12 / 阅读(87) / 评论(0) 分类 2016年VOA慢速英语(三)月

英语学习方法二 这种方法非常有效且很容易坚持---口译汉英对照(或英汉对照)的小说或其它读物.首先我们先读汉 语部分,然后逐句直接口译成英文,完成一小段后,去看书上的对应英文部分并与我们的口译进行比较 ,我们马上可以发现我们口译的错误,缺点和进步。

发表于:2019-02-09 / 阅读(107) / 评论(0) 分类 英语学习方法

(1) We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-02-12 / 阅读(82) / 评论(0) 分类 实用英语

Compston's machine allowed such rocks to be dated with unparalleled precision. 康普斯森的仪器能以无与伦比的精确度测定这些岩石的年代。 The prototype SHRIMP was built and machined in the Earth Science department's own worksho

发表于:2019-02-17 / 阅读(97) / 评论(0) 分类 万物简史

方法就是方法,它最终无法取代刻苦的学习。 Oral English: 口语学习方法总汇 (1).We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy

发表于:2019-02-18 / 阅读(87) / 评论(0) 分类 实用英语

(1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abi

发表于:2019-02-18 / 阅读(95) / 评论(0) 分类 英语口语

1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-02-18 / 阅读(85) / 评论(0) 分类 英语学习方法

如何说出准确流利的英语口语 1. We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to p

发表于:2019-02-19 / 阅读(75) / 评论(0) 分类 英语学习方法

提高英语口语的方法 (1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to

发表于:2019-02-19 / 阅读(73) / 评论(0) 分类 英语学习方法

高效的英语口语学习方法 口语学习方法总汇,但方法毕竟只是方法,它最终无法取代刻苦的学习,一起来看看总结出来的口语学习方法都有哪些吧。 (1)。We study spoken English so as to make oral comm

发表于:2019-02-19 / 阅读(139) / 评论(0) 分类 英语学习方法

英语口语的学习方法 方法就是方法,它最终无法取代刻苦的学习。 Oral English:(口语学习方法总汇) (1)。We study spoken English so as to make oral communications, so this order of importance of oral English

发表于:2019-02-19 / 阅读(100) / 评论(0) 分类 英语学习方法

妙招学口语(下) (6)、Oral composition and 3-minute training method: This method is suitable for intense training. Making an oral composition about a certain topic for one minute thefirst time and record the composition on tape at the sameti

发表于:2019-02-26 / 阅读(95) / 评论(0) 分类 英语口语

(1).We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-03-02 / 阅读(122) / 评论(0) 分类 英语口语

小学英语写作范文:感恩父亲 Dear Dad: You have worked hard! In the past, I am always afraid to you and positive dialogue. Every time something was always afraid to tell you. Because when you face the total serious. Today to take this oppo

发表于:2019-03-17 / 阅读(1595) / 评论(0) 分类 英语作文
学英语单词
0756
ablating rate
amalgama
atomic expression
be symptomatic of
bead roughness
BMAH
bone ashes
bronze race
bubble-filled bed
bwith
calamint
cash received book
cayenne pepper spot
Cayley-Purser
cinnamyl acetate
cold banded steel pipe
compliance culture
coronary blood pressure
Corophiidae
cronyisms
Cycas segmentifida
development of water resources
difference group
dimethulene
disengaging fork lever
emulate system
enawe
endogenous hypertriglyceridemia
eunomic
fibrinases
fix someone's face
food department
go above
half-persistent agent
handmill
heardest
Hwangdung-do
I-shaped plan
immaturation
infrared dome
integrating translator
inter-company elimination
interhemispheric
isotypy
Kilmaluag
Kitanda
knifesman
latency setting
launch services
liquefied gas tanker operation
LZM(lysozyme)
macrovariable
maturity gap exposure
microcomputer-relay interlocking
Mission Indians
monobaric
multi tool
nonoffender
NSC-71423
Ofanto, Fiume
palaearctic fauna
parenteralia
penicillin F
petrolatum gauze
Phormidium sinense
pisidia dispar
popets
postdelivery room
powder cask
primuliflora
procaccinis
quite a bit
radiator shutter
research reactor
running time estimate
rush agate
Santana do Ipanema
sea-bed area
shipping label
single molecule detection
snapin
special muscular stomach
splatterwork
St-Vit
stytyl alcohol
supply in full set of
sutural lamina
task switching
teledeltos
telegram delivery service
the king's new clothes
the room is spinning
thermal stresses due to nonuniform temperature
thin-wall channel
throttle body
transverse spacewidth
tusk shells
TWX service
types of games
well-healed
win someone's ear s