滴定热量计

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. This will just take a minute. Youve probably chased a fly or two around the house this summer. And, chances are, it took a few swings before you brought down the buzzing nuisance.

发表于:2018-12-02 / 阅读(181) / 评论(0) 分类 Scientific American(八)月

UNIT 8 Text A PRE-READING TASK Exercise 1 Before reading the passage, try to answer the questions. 1. How many years do you think it takes to double the world population now? 2. What might be the poss

发表于:2018-12-04 / 阅读(306) / 评论(0) 分类 实用英语综合教程

This is the VOA Special English Health Report. Every few years, two groups do a study of how many Americans wash their hands after using the toilet. These groups are the American Society for Microbiology and the American Cleaning Institute, formerly

发表于:2018-12-07 / 阅读(125) / 评论(0) 分类 2010年VOA慢速英语(九)月

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2018-12-12 / 阅读(194) / 评论(0) 分类 北美小学生英语一年级教材(牛津英语教材)

World Hepatitis Day is observed on May the 19th. It aims to increase awareness worldwide of the diseases hepatitis B and hepatitis C. Its hope is to encourage the prevention and diagnosis of these two diseases, and increase the number of people who r

发表于:2018-12-29 / 阅读(132) / 评论(0) 分类 英语课程学习计划和讲义

今天我们要学的词是tit-for-tat. Tit-for-tat意思是针锋相对,以牙还牙。Islamist militants' attacks and tit-for-tat violence between rival ethnic groups have cast doubt on Mali's upcoming elections. 伊斯兰国激进分子的袭击和

发表于:2018-12-30 / 阅读(118) / 评论(0) 分类 英语单词荟萃

By Jessica Berman The U.S. space agency has released the first close-up pictures of Titan, Saturn's secretive, giant moon. Photos from the international Cassini spacecraft show the orbiting object shr

发表于:2019-01-03 / 阅读(138) / 评论(0) 分类 VOA2004(下)--健康科技

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(149) / 评论(0) 分类 Scientific American(八)月

The U.S. Special Inspector General for Iraq Reconstruction has criticized the State Department for its management of nearly $3 billion in contracts and grants in Iraq. In two reports, auditors cited weak and ineffective State Department oversight of

发表于:2019-01-13 / 阅读(240) / 评论(0) 分类 VOA标准英语2010年(一月)

The US government is considering, for the first time, the approval of a genetically-modified animal for human consumption. The animal being considered is salmon, but approval could open the door for other animals as well. Those who favor the move say

发表于:2019-01-13 / 阅读(180) / 评论(0) 分类 VOA标准英语2010年(七)月

Stomach cancer is one of the deadliest diseases, and ranks second among cancers worldwide with at least 800,000 deaths yearly. But in the United States, the number of cases has been declining, except for among one group of Americans. Glenda Reimer, h

发表于:2019-01-13 / 阅读(140) / 评论(0) 分类 VOA标准英语2010年(五)月

At Scripps Research Institute in Jupiter, Florida, scientists are working to find clues about how the human brain processes memories. Their laboratory test animal is not a chimp or a dog or a rat animals that we know can remember things it is the com

发表于:2019-01-13 / 阅读(175) / 评论(0) 分类 VOA标准英语2010年(三月)

This is the VOA Special English Development Report. Health experts predict that soon, more people will die from cancer than from AIDS, tuberculosis and malaria combined. They expect that by two thousand ten, cancer will become the world's leading cau

发表于:2019-01-20 / 阅读(136) / 评论(0) 分类 2010年慢速英语(三)月

Glaucoma is the leading cause of irreversible loss of vision worldwide and now doctors believe the devastating disease begins in the brain and not in the eye as has long been thought. Dr. David Calkins, director of research at the Vanderbilt Eye Inst

发表于:2019-01-20 / 阅读(129) / 评论(0) 分类 VOA标准英语2010年(三月)

(a.) Dear Mr. Jones: We thank you for your letter dated April 8 inquiring about our leather handbags. As requested, we take pleasure in offering you, subject to our final confirmation, 300 dozen deerskin handbags style No.MS190 at $124.00 per dozen C

发表于:2019-01-21 / 阅读(181) / 评论(0) 分类 天天商务口语

Tit for Tat针锋相对An American lady traveling in England some years ago, got into an compartment of a smoking carriage where an Englishman was smoking a pipe. For a short time she sat quietly expecting that the Englishman would stop smoking. But

发表于:2019-01-28 / 阅读(152) / 评论(0) 分类 英语小达人

72 约翰斯·霍普金斯疟疾协会 DATE=7-19-01 TITLE=SCIENCE REPORT - Johns Hopkins Malaria Institute BYLINE=Jill Moss (Start at 01'0

发表于:2019-01-30 / 阅读(190) / 评论(0) 分类 科技之光

今天我们要学的词是multitasking。 Multitasking, 原本是计算机术语,指多重任务同时处理,现在已经被沿用到日常生活中,指同时干很多事情。现在的美国中学生,一边写作业,一边听音乐,还要

发表于:2019-02-02 / 阅读(117) / 评论(0) 分类 英语单词荟萃

Offering Substitute 提供代用品 Specimen Letters1. Offering Rayon in Place of Watered Silk提供人造丝代替水洗丝Dear Sirs,Thank you for your fax of yesterday (April 3) with your order No.456 for 5,000 metres of 100cm wide watered silk. We

发表于:2019-02-05 / 阅读(200) / 评论(0) 分类 实用英语

Ever wonder how they determine how many calories are in food? Yael and Don explain it in this Moment of Science. Y: All right, Don. What are you doing? D: I'm using a bomb calorimeter to figure out how many calories are in my lunch. See, I put my san

发表于:2019-02-15 / 阅读(141) / 评论(0) 分类 英语时差8,16
学英语单词
2-amino-5-nitrophenol
a monkey wrench in the works
angelization
arrided
asiminine
atomic energy
Atover
binding device
boonfellow
boxholm
bubblep bubbling sound
can whistle for
cannonry
Carnmore
characterized
Chongqing chicken
Chunri Township
CLIP-170
componemt parts
confirm file conversions
conflicting phantom aspect
copy sorts
craver
damage feasant
data insert
dept of public enterprises
derived set
desirability
Dinintel
equipmential connection
excitation motor-generator set
fiberoptic laryngoscope
gas graphite reactor
goules
haliotis gigantea
hard-driver
high-frequency conductometric titration
hirajima
hirtodrosophila paralatifrontata
Horseshoe B.
Hyland B.
hypertriglyceridaemia
illuminating value
indirect arc heating
infraxyphisternal
joli
kill the voltage
Krutinka
law of the realm
lunar crust
machine independent command language
made your point
Malyy Uzen'
medullary tube
metal drum
microbiological antagonism
Mortgage Banker
mugen
nuclear triode detector
offset waveguide
order Opiliones
osteodentin(e)
pains in the neck
particle kinetics
passed off
pedicabs
pistils
polyvinylchlorides
populus albas
portative
positive Hermitian operator
prematuration
prenticing
pristipomoides flavipinnis
propene dicarboxylic acid
Provideniya, Bukhta
ramoes
reaccreditations
rebars
reindustrializations
schistocormus fissiventralis
sciatic tuberodties
shahtoosh
shais
Sinsheim
Soxisol
spoil the sport
stand alone
stochastically independent
strewingly
sulfoethanoic acid
summer camps
telling off
test for metabolic effect of thyroid hormone
tinsey
unclassified epithelial tumor of ovary
undisturbed line-of-sight system
unsymmetrical operation
voroshilov (ussuriysk)
walk up to
widow-bird
Xerotus