[化] 六甲基丙酮

There are many arguments about the advantages and disadvantages of examinations. Some people think that examinations can help them review the lessons regularly, while others maintain that too many examinations have frustrated them. To me I think an e

发表于:2018-11-28 / 阅读(137) / 评论(0) 分类 疯狂英语易背作文

[00:00.00]Module 1 LEARNING METHODS [00:05.54]Unit 3 Some of the exams were very difficult. [00:11.24]4 Listen and complete. [00:15.06]Mum,I have my report here. [00:18.39]Great. Can you give it to me,please? [00:21.26]Sure. [00:22.78]Oh, this is for

发表于:2018-12-04 / 阅读(88) / 评论(0) 分类 外研社新标准初中英语九年级

New IMAX Space Documentary Brings Images to Life 新的3D IMXA给生活带来新的享受 What we watched then were blurry and grainy TV transmissions. Now, the 45-minute IMAX documentary puts the aud

发表于:2018-12-08 / 阅读(59) / 评论(0) 分类 VOA2005(下)--环境科学探索

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(42) / 评论(0) 分类 2016年VOA慢速英语(十)月

Simple New Test Detects Early Signs of Diabetes 新型简单测试或能检测出糖尿病早期迹象 People with Type 1 diabetes, usually diagnosed in children and young adults, must take insulin injections and watch their diet to keep their blood

发表于:2018-12-16 / 阅读(54) / 评论(0) 分类 VOA标准英语2015年(一月)

Air pollution outside is easy to spot, hanging over the city, or sputtering from a tailpipe. But there's lot of indoor air pollution, too, even if it's not as obvious. It's caused by volatile organic compounds, or VOCs. They can come from building ma

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 2016年Scientific American(八)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(90) / 评论(0) 分类 Scientific American(六)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(93) / 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(47) / 评论(0) 分类 初学者听力文摘精选

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(123) / 评论(0) 分类 60秒科学

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(87) / 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(126) / 评论(0) 分类 农业与发展

By Nancy Steinbach EDUCATION REPORT -July 25, 2002: SAT Examination This is the VOA Special English Education Report. Each year, millions of people around the world apply to study at American colleges

发表于:2019-01-06 / 阅读(78) / 评论(0) 分类 教育与新闻

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(96) / 评论(0) 分类 VOA2003(下)-环境与健康

Technology Report - Scientists Develop Smartphone App for Eye Exams This is the VOA Special English Technology Report. More than two hundred eighty million people around the world have vision problems or are blind. The World Health Organization says

发表于:2019-01-12 / 阅读(85) / 评论(0) 分类 2011年VOA慢速英语(五)月

'Terrorists in Love' Examines Islamic Radicals How does a young man transform from a law-abiding middle-class citizen into a terrorist? Ken Ballen, a former federal prosecutor, spent five years trying to find answers to that question. The result is a

发表于:2019-01-13 / 阅读(87) / 评论(0) 分类 VOA标准英语2011年(十一月)

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(123) / 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(73) / 评论(0) 分类 VOA常速英语2013年(十月)

By Scott Stearns Dakar 10 November 2009 Prosecutors at the U.N. Special Court for Sierra Leone have begun their cross-examination of former Liberian President Charles Taylor who is facing charges of war crimes and crimes against humanity. Former Lib

发表于:2019-02-02 / 阅读(59) / 评论(0) 分类 VOA标准英语2009年(十一月)

By Deborah Tate Washington 18 July 2006 The Bush administration's nuclear accord with the Indian government was the focus of a Senate committee hearing Tuesday, with witnesses underscoring the benefits to both the United States and India. ---------

发表于:2019-02-03 / 阅读(144) / 评论(0) 分类 2006年VOA标准英语(七月)
学英语单词
acrylic water based putty
address correction
adjustable speed transmission
advents
affinity
amplifiabilities
areola papillaris
basic flowchart
bowsies
Brassica chinensis
CELSS
controlled aerodrome
coupled resonance
crispums
digital television system
Diphenylsulfon
double deflection grille
droodle
eaas
earlies
elemental term
elixir of love
eminence of concha
entry format
equalibrator
exclusive gate
fair-faced concrete
fajr
farm produce market
feeding chair
fixed-bed
flesh
frontotemporal dementia
fulop
going private
grasshopper spring
hagglers
high-pressure spinning
homeplaces
horizontal opposed type engine
ignitron rectifier
Imiprex
incircling
Japanese Trading Company
juice extraction
jump the rails
Kaduyskiy Rayon
l'hospital
lug-worm
marine petroleum pollution
MATESOL
microwave spectrometer
Monday morning quarterback
motion of nature
myxodermoside
Ménez Hom
Nab Jones
natural cutoff
numerical estimates
orientation tour
oscillographies
overland flow
penoche
Pi.,pi.
picked-up
plain grinding machine external
Powder River Basin
primary absolute cavity radiometer
printed card form
protein-calorie
quadruplicating
radially symmetric
rammen
rangeliosis
rerage
restructuring analysis
rotary trencher
semi-permanent magnetic material
serious burn
shoefiti
silicon probe
slap-and-tickle
stationay processes
stopper lug
submarine rocket
tabulator setting
Tapuri
technical institute
tegestology
The Death on the High Seas Act
three-pulse cascaded canceller
two-compartment test
under-voltage detector
underground feeder
ungorgeous
ungroupable
unsawn face
veterinary anesthesiology
wet ring spinning frame
wet-collodion
whimble
world-famous