消光截面

Part One 听辨练习 A. Listen, circle the corresponding number if you hear???????or ??????in the word . 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. B. Write down the word you hear on the tape, then fill in the b

发表于:2018-11-27 / 阅读(340) / 评论(0) 分类 4+1听力口语MP3

1. M: Are you ready to order now? [00:02.59]W: Yes,I'll have roast beef,French fried potatoes and green beans. [00:08.15]Q: Whom is the man talking to? [00:12.25]2. M: Well,if I had begun studying English earlier. [00:16.61]I wouldn't be having so mu

发表于:2018-11-29 / 阅读(261) / 评论(0) 分类 决胜四级听力必备

[00:01.01]Recently, there was another threat [00:03.02]when the tanker Jessica ran aground [00:04.83]near the islands. [00:06.48]It is believed to have leaked almost [00:08.32]a million litres of oil into the sea. [00:11.75]At first, it was feared th

发表于:2018-12-13 / 阅读(192) / 评论(0) 分类 北师大版高中英语模块7(选修)

Its five years old. 它五岁了 'Now remember boys and girls,' said the science teacher. 'You can tell a tree's age by counting the rings in a cross section. one ring for each year.' Tom went home for dinner and found they were having a jelly roll f

发表于:2018-12-18 / 阅读(135) / 评论(0) 分类 TED演讲国际问题篇

Unit 43 What Caused the K-T Mass Extinction? The latter part of the Cretaceous Period was a time of continental drift and accompanying volcanic activity. The supercontinent was splitting up and the continents were taking on their modern-day forms. Ma

发表于:2018-12-30 / 阅读(115) / 评论(0) 分类 英语流行话题阅读:语境识词4500

Conservationists are overestimating the number of species that have been driven to extinction(消失), scientists have said. A study has found that a third of all mammal species declared extinct in the past few centuries have turned up alive and well

发表于:2019-01-07 / 阅读(143) / 评论(0) 分类 英语新闻

Neil: Hello and welcome to Six-Minute English from BBC Learning English, I'm Neil and with me today is Rosie. Rosie: Hi there. Neil: Well, today we're talking about men. Rosie: That sounds interesting. Neil: It is very interesting especially if you'r

发表于:2019-01-07 / 阅读(211) / 评论(0) 分类 六分钟英语

面对面的交流就是 face to face,许多人认为这样的沟通效果和电话上或网上联系是不一样的。 例句 I've been in touch with my niece, who was born in South America, for years but we have never met face to face. One way of

发表于:2019-01-08 / 阅读(166) / 评论(0) 分类 英语日常口语

By Alisha Ryu Nyeri, Kenya 22 May 2006 Jack Githae, herbal doctor, is standing next to a young MUIRI tree at his clinic in Nyeri, Kenya For thousands of years, people living around Mount Kenya in the

发表于:2019-01-08 / 阅读(231) / 评论(0) 分类 2006年VOA标准英语(五月)

By Lisa Schlein Geneva 12 September 2007 A new report says the number of species threatened with extinction is escalating. The World Conservation Union, which has just released its Red List of Threatened Species, warns life on Earth will continue to

发表于:2019-01-13 / 阅读(200) / 评论(0) 分类 2007年VOA标准英语(九月)

Researchers have developed a new computer model that they say helps determine which mammals are headed for extinction as a result of human activity. Earth is undergoing its sixth mass extinction, threatening about a quarter of all mammal species, ac

发表于:2019-01-13 / 阅读(147) / 评论(0) 分类 VOA标准英语2009年(六月)

Humans Driving Massive Animal Extinction Earth is in the midst of its sixth mass extinction of animal species -- the first to be caused by humans -- in the past half-billion years, setting off a downward spiral in the environment and human health, wh

发表于:2019-01-14 / 阅读(117) / 评论(0) 分类 VOA标准英语2014年(七月)

13. They all seem to look alike (though they come from all over) - lean, pointed, dedicated faces, wearing jeans and sandals, eating their buns and bedding down for the night on the flagstones outside the theatre to buy the 20 seats and 80 standing-r

发表于:2019-01-16 / 阅读(119) / 评论(0) 分类 考研英语长难句讲解

The Yangtze River is a major habitant for finless porpoise, an aquatic marine mammal close to dolphins. However due to increasing human activities the number of the animal has been declining in China over the years. Provinces along the Yangtze River

发表于:2019-01-19 / 阅读(188) / 评论(0) 分类 2018CRI中国国际广播电台

Where purple martins had once laid their eggs in hollow threes, in time, they came to rely almost totally on people to provide nests for them. These artificial nests were made from dried out squashes known as gourds. The shape made them perfect nesti

发表于:2019-01-23 / 阅读(125) / 评论(0) 分类 探索与发现2013年

Cambodia is home to the largest population of sun bears left in the wild. As the worlds smallest bear species, they are now facing a high risk of extinction due to the twin threat of habitat loss and illegal hunting. Charities are working hard to sav

发表于:2019-02-04 / 阅读(130) / 评论(0) 分类 英语新闻视频

China's science-fiction fans could soon turn their attention home, as the mainland's film industry is gearing up to make a big push into the genre. Yang Peng, planning supervisor for Beijing Galloping Horse Film TV Productions, says that many studios

发表于:2019-02-07 / 阅读(147) / 评论(0) 分类 英语新闻

Pre-Listening Vocabulary habitat: the place where living things live extinction: the state of no longer existing threatened: facing a possible risk of extinction 24/7: all day and night; at all times human intervention: the involvement of humans Habi

发表于:2019-02-08 / 阅读(223) / 评论(0) 分类 Facts-事实

Pre-Listening Vocabulary observation: something that you see cross section: a view of the inside of something after a cut has been made across it hold true: remain a fact or truth even in other situations ideal: suitable sap: fluid (sugar and mineral

发表于:2019-02-08 / 阅读(388) / 评论(0) 分类 Facts-事实

abandon vt.放弃, 遗弃 (90-6, 91-6,92-1,93-1,95-1, 95-6,98-6,99-6,02-6,05-1,06-12,07-6) After driving many of the animals around them to near extinction, people were forced to abandon their old way of life for a radically

发表于:2019-02-09 / 阅读(174) / 评论(0) 分类 大学四六级阅读
学英语单词
-works
all-electric control
allowable strain
arckhal
artificial cognition
Assam Jawa
Athens
atrial muscles
babychicken
Bothrops atrops
bottom-hole sample
cage structure
carbonyl linkage
Carrington meridian
chewables
circulatery system dynamics
commit on
condensate return piping
continuous type
copilia longistylis
delocalized
DMRF
do our utmost
El Hito, L.de
esmarkite
failure to take delivery
fedders
femto-farad
flat type relay
fntc
forward foreign currency assets
Frankes
genus tringas
global source
grain pan
grain-boundary movement
gretas
Gymnarchidae
half pipes
hiarcs
howsams
hydromulch
imhof
indicated market
intelligent data acqusition system
intensive-care unit
inter-departmental profits
key gene
knotted fibric
Kryder's Law
La Spezia, Prov.di
lasira
liquid polybutadiene rubber
loop structure
lunchers
man machine process chart
man-machine complex
metachronisms
metal cutting machine
metasurface
motor clipper
navigation data assimilation center
necessary bandwidth
NONVOL
office model
parcellates
pecdar
pelviradiography
periscopic wind gauge
polyvalent allergy
postfixed point
Primula farinosa
Psamminida
punchcutters
queen bee jelly
radio autopilot coupler
resident-centered
saprophytic transitional infection
self adjusting jaw vice
Seopo-ri
silicon oil spring damper
silicum
sixaern
smooth winterberry hollies
socioeconomic statistical system
sort statement
sportswriter
spot out
sprits
submerged lamp
suborder odontocetis
supermaxillary
swarf removal
Syväri
table specification test data
tagetiin
tickseed sunflowers
transferable accounts
triumphant
water safety
well-dressed
wet-type air filter