哌替啶,度冷丁,利多尔

In his youth Charles Darwin enjoyed all the freedom to experiment and do whatever he liked. The study of physics, chemistry, and later botany, was his hobby. At the age of 22, Darwin was invited to join the scientific expedition on the Beagle. During

发表于:2018-12-04 / 阅读(88) / 评论(0) 分类 人教全日制普通高中英语(必修)高三(全一册)

讲到遗传学,我们不能不提孟德尔。他的研究奠定了遗传学和现代生命科学的基

发表于:2018-12-06 / 阅读(123) / 评论(0) 分类 英文故事剧

[ti:UNIT 1 Me and My Class Lesson 5:The Best Clothes] [0:00.520]UNIT 1 第一单元 [0:02.361]Me and My Class 我和我的班级 [0:04.863]Lesson 5: 第5课: [0:06.421]The Best Clothes 最好的衣服 [0:09.065]THINK ABOUT IT! 想一想! [0:11.14

发表于:2018-12-10 / 阅读(195) / 评论(0) 分类 河北教育初中英语(初中起点)八年级上

M 畸形 malformation 描图 mapping 标记 marker 黑色素瘤 melanoma 孟德尔 Mendel, Johann (Gregor) 孟德尔遗传 Mendelian inheritance 信使RNA messenger RNA (mRNA) [分裂]中期 metaphase

发表于:2018-12-12 / 阅读(91) / 评论(0) 分类 医务英语

[00:02.84]Unit 1 My name's Gina. [00:06.05]SELF CHECK [00:08.38]1.Key word check. [00:13.01]Check () the words you know. [00:16.39]I it is ID card what my hello your his [00:37.26]her [00:40.05]first name [00:42.84]last name [00:45.60]telephone numbe

发表于:2018-12-13 / 阅读(97) / 评论(0) 分类 新目标初中英语七年级上

[00:00.00]Unit 1 My name's Gina [00:05.38]Section A [00:07.78]1b Listen and number the conversation[1-3]. [00:14.01]Conversation 1 [00:15.87]Hello. I'm Mary. [00:18.20]Hi,Mary.I'm Jim. [00:20.93]Conversation 2 [00:22.94]What's your name? [00:24.74]Al

发表于:2018-12-13 / 阅读(97) / 评论(0) 分类 新目标初中英语七年级上

UNIT 4 Let's learn English! [00:05.88]Section A Activity 1b. [00:11.34]Listen to the conversations and number them [1-5]. [00:18.10]Conversation 1 [00:21.76]Good-Bye.Bye-Bye. [00:26.44]Conversation 2 [00:30.20]A:What's this,Victor? [00:33.46]B:Sorry,

发表于:2018-12-13 / 阅读(171) / 评论(0) 分类 新目标初中英语七年级

[00:00.00]Workbook [00:00.80]练习册 [00:01.60]Module 7 Time off [00:03.26]模块7 休息时间 [00:04.92]Reading [00:05.69]阅读 [00:06.47]7 Read the passage andchoose the best answer. [00:09.65]7 读课文,选择最佳答案。 [00:12.83]Lost

发表于:2018-12-13 / 阅读(108) / 评论(0) 分类 新标准初中英语第四册

[00:06.35]READING [00:07.58]THE BIRTH OF A SCIENCE [00:10.19]Before the eighteenth century, botany was merely a branch of medicine. [00:13.90]Unit then, mostly doctors and surgeons studied herbs. [00:17.97]Attempts had been made by others to classify

发表于:2018-12-13 / 阅读(156) / 评论(0) 分类 高中英语人教版必修第三册

[00:06.35]READING [00:07.58]THE BIRTH OF A SCIENCE [00:10.19]Before the eighteenth century, botany was merely a branch of medicine. [00:13.90]Unit then, mostly doctors and surgeons studied herbs. [00:17.97]Attempts had been made by others to classify

发表于:2018-12-13 / 阅读(148) / 评论(0) 分类 高中英语人教版必修高三

[00:00.63] 4.The Father of Genetics [00:04.55]His name is introduced to biology students, but often forgotten after the final exam. [00:10.76]His pioneering discoveries went unnoticed by the world until years after his death. [00:15.88]But now, in th

发表于:2018-12-26 / 阅读(84) / 评论(0) 分类 温馨夜读II

[00:00.00]Unit 6 In the laboratory [00:04.70]1.Listen,read and practice in pairs. [00:11.47]Do you like to do experiments in a laboratory? [00:16.54]What is a science class like? Let's see what these people are doing. [00:23.90]Teacher:Good morning,e

发表于:2018-12-29 / 阅读(219) / 评论(0) 分类 澳大利亚中学英语

JEFFREY BROWN: Next tonight, Afghanistan, where both the U.S. and Afghan governments are exploring new negotiations with the Taliban. Margaret Warner sat down with three Afghan women who have a significant amount at stake in the outcome. WOMAN: We do

发表于:2018-12-31 / 阅读(141) / 评论(0) 分类 PBS访谈健康系列

RACHEL MARTIN, HOST: Gina Haspel, the first woman nominated to lead the CIA, almost stepped aside over the weekend. The Washington Post reported that Haspel was willing to withdraw rather than face tough questions over her role in the CIA's waterboar

发表于:2019-01-16 / 阅读(158) / 评论(0) 分类 2018年NPR美国国家公共电台5月

Mendeleyev dutifully completed his studies and eventually landed a position at the local university. There he was a competent but not terribly outstanding chemist, known more for his wild hair and beard, which he had trimmed just once a year, than fo

发表于:2019-01-29 / 阅读(96) / 评论(0) 分类 万物简史

Mendeleyev used a slightly different approach, placing his elements into groups of seven, but employed fundamentally the same principle. Suddenly the idea seemed brilliant and wondrously perceptive. Because the properties repeated themselves periodic

发表于:2019-01-29 / 阅读(84) / 评论(0) 分类 万物简史

For most of us, the periodic table is a thing of beauty in the abstract, but for chemists it established an immediate orderliness and clarity that can hardly be overstated. Without a doubt, the Periodic Table of the Chemical Elements is the most eleg

发表于:2019-01-29 / 阅读(91) / 评论(0) 分类 万物简史

Despite the occasional tidyings-up, chemistry by the second half of the nineteenth century was in something of a mess, which is why everybody was so pleased by the rise to prominence in 1869 of an odd and crazed-looking professor at the University of

发表于:2019-01-29 / 阅读(94) / 评论(0) 分类 万物简史

PEOPLE IN AMERICA – April 28, 2002: Milton Berle By George Grow VOICE ONE: I’m Mary Tillotson. VOICE TWO: And I’m Doug Johnson with the VOA Special English program PEOPLE IN AMERICA. Today, we t

发表于:2019-01-30 / 阅读(211) / 评论(0) 分类 People in America

Listen to the telephone messages and correct the messages on the note below. 1.Hi, Miss Chang.This is calling from JBC Clinic. Your appointment with Dr Wu on the 15th has to be postponed to the 20th at 6:OOpm,if you have any questions please give us

发表于:2019-02-17 / 阅读(121) / 评论(0) 分类 英语听力练习题
学英语单词
acoustooptic filters
additive for sulfur capture
additive functions
Alvena
ambient air quality standard
ammonia-oxygen fuel cell
androstadiene
anna-marie
Basil of Caesarea
bethincourt
biznatch
camera rehearsal
cane-fiber board
carrier sense multiple access
cartmill
chonju (jeonju)
cleruchies
cost plus
cowboy shot
cupola drag
deas
Dexafed
diamino dihydroxy arsenobenzene
diving ball
domestications
double tube mercury manometer
dual tariffs
electrotaxis
ethnohistoric
film viscosity
finger for fork release
floating balancing ship lift
flow ratio controller
fudging
get foul
Glienicke
guardians in soccage
guiding collar
Hanjīrak
hazly
Herissantia
idionodal rhythm
inner
IPE (individual plant evaluation)
Ku Kluxism
loudness measurement
ludwigia ovalis miq.
marine data management
mazarins
metyridine
Milan, Edict of
mine explosive
minimum altitude bomb
mode-locking lasers
momental ellipse
monochrome signal gemerator
museology
near-field phenomenon
nonfraternities
nonmutation
osmunda japonica
osteomyelites
overpeise
pantheonize
pavimentum ventriculi
polymorphousness
propagandized
psychological conflict
pugri
pupil teacher
quartz wedge compensator
rare materials
real beer/ale
respondentia bond
right hepatic veins
ring type cold-strip mill
rutskoy
saber-toothed tigers
Sabiaceae
Saf-T-Coil
Salix humilis
salmonella food poisoning
screening seal coat
sequencing unit
severity of injuries
sheathes
shift lock key
shotcrete shell
siked
St Meinrad
strychnized
tailorability
takeover panel
theorem of complementary slackness
tier soil
tilonia
tinfoil capsule
traverse-feed
well-manicured
were open to question
word meanings
zone dividing meridian