四甲基硅

CHAPTER FOUR My New Friend The next morning we got up in the dark. In all the rooms it was as cold as ice. This time the porridge was not burned, but I still felt hungry because there was not enough. The girl I had spoken with yesterday was older tha

发表于:2018-12-05 / 阅读(162) / 评论(0) 分类 简爱

CHAPTER EIGHTEEN Mr. Rochesters Story Sometime in the afternoon I woke up from a long sleep. I felt weak when I stood up, because I had not eaten anything all day. When I opened my bedroom door, I saw Mr. Rochester. He was sitting in a chair outside

发表于:2018-12-14 / 阅读(139) / 评论(0) 分类 简爱

CHAPTER TWENTY-TWO I Am No longer Poor After St. John left me, it began to snow. It snowed all night and the next day. In the evening, I was sitting by the fire and had just begun to read when I heard a knock at the door. St. John came inside the hou

发表于:2018-12-14 / 阅读(138) / 评论(0) 分类 简爱

CHAPTER TWENTY-THREE My Past Returns I promised St. John that I would teach at the Morton school until Christmas. Then he could find another teacher. On the last day of school. St. John came to see me as I said goodbye to my students. I was sad to se

发表于:2018-12-14 / 阅读(140) / 评论(0) 分类 简爱

AS IT IS 2016-10-01 Report: Smoking May Permanently Damage Genetic Material 报告称吸烟或永久性损伤你的遗传物质 Here is another reason to not light up a cigarette. Smoking can permanently damage your genetic material, according to a n

发表于:2018-12-16 / 阅读(61) / 评论(0) 分类 2016年VOA慢速英语(十)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(109) / 评论(0) 分类 Scientific American(六)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(122) / 评论(0) 分类 Scientific American(一)月

Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting

发表于:2018-12-24 / 阅读(107) / 评论(0) 分类 Scientific American(三)月

You may have heard that humans and chimpanzees have something like 96 percent of our DNA in common. So why, then, are diseases like cancer so common in humans but so rare in chimps? If our DNA is nearly identical, shouldnt we be at risk for many of t

发表于:2018-12-28 / 阅读(62) / 评论(0) 分类 初学者听力文摘精选

Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,

发表于:2018-12-31 / 阅读(72) / 评论(0) 分类 英语听力文摘 English Digest

Stomach Cells Happier with Dark Roast Coffee Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to research presented

发表于:2019-01-02 / 阅读(136) / 评论(0) 分类 60秒科学

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(107) / 评论(0) 分类 医务英语

M Madasiatic acid 崩大碗酸 Magnoflorine 木兰花碱 Magnolia cortex P.E 厚朴提取物 Magnolol 厚朴酚 Maitake mushroom P.E 灰树花提取物(舞茸提取物) Malonyl Oleanolic acid Hemi

发表于:2019-01-03 / 阅读(107) / 评论(0) 分类 医务英语

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(142) / 评论(0) 分类 农业与发展

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(115) / 评论(0) 分类 VOA2003(下)-环境与健康

AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be

发表于:2019-01-12 / 阅读(99) / 评论(0) 分类 2015年VOA慢速英语(七)月

AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin

发表于:2019-01-19 / 阅读(99) / 评论(0) 分类 2018年NPR美国国家公共电台12月

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(139) / 评论(0) 分类 经济学人科技系列

Body Clock Provides Clues to Aging 生物钟提供衰老的线索 If youre searching for the fountain of youth, you might find it in your DNA. Thats according to a new study that sheds light on the biological clock ticking in our genomes, why our bod

发表于:2019-01-31 / 阅读(93) / 评论(0) 分类 VOA常速英语2013年(十月)

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(128) / 评论(0) 分类 万物简史
学英语单词
Anthemius of Tralles
ASPAT
asphaltic residue
Assam Jawa
auto-inductive coupling
aversive stimulus
business costs
capital of Kentucky
causticizing plant
clypeatus
collective breeding
color sync signal
composite mold
configuraholic
consumed boundary
dactylomegalies
Dehydrogluconokinase
diatron
Dichlorphos
disassortative
disoffice
distortion meter
dutchers
edge card
established connection
extraction column
facultative respiration
fall into a decline
Fergusson I.
field rate flicker
finer switch
FISlTA
fixing fillet
Goffmanian
ha
HMMA
infectio
information carrying signal
ingrooved
inverter supply panel
irregularly wave axis guide
Israelitic
k out of n system
Kavarna
keinath
khapra beetle
kheera
Korotovo
l'etonnant
loessial
long-crested wave
lonicera dioicas
lumbar aortography
magnetic reluctivity
make my point
marking pulse
minimal row flow table
mounting stud lock nut
multiple birth
newspaperly
normally closed contactor
Noturus
occour
panel molding
parallel switching network
peripheral port
planetary atmospheric composition
proximoventral
pseudocirrhosis hepatis
raising eyebrows
reacting interphase
resistance to deformation
roommate chicken
Rose Revolution
Salazosulfapyridazine
screw boat
see over
sensorius
Shklov
simulands
sodium pump failure
speech-to-text
Steinebach
suzes
Tainia ruybarrettoi
tear something to bits
tephras
thalassaemia
Trachelospermum jasminoides
Uanda
undershore
uratic conjunctivitis
verrazano-narrows bridges
view of time and space
viricide
vitreous glaze
went on a trip
whimsical sex
windward isless
working locomotive
zoned
zygospondylous articulation