[化] 氟化铝

3 Listen carefully to the conversations and short passages [00:07.99]and choose the best answer to each of the questions. [00:13.56]1.A)She is pitiful. B)She is too shy to apply. [00:33.41]C)They are afraid of her. D)She is intelligent. [00:41.27]2.(

发表于:2018-12-01 / 阅读(243) / 评论(0) 分类 大学六级听力模拟题

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel

发表于:2018-12-02 / 阅读(146) / 评论(0) 分类 Scientific American(十二)月

07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the

发表于:2018-12-07 / 阅读(112) / 评论(0) 分类 科技之光

This is the VOA Special English Development Report. Researchers say they have found a way to extend the storage life of a drug used to treat H.I.V. Their work could give infected mothers in the developing world a new way to prevent the spread of the

发表于:2018-12-16 / 阅读(100) / 评论(0) 分类 2010年VOA慢速英语(五)月

New Documentary Explores Aluminum's 'Dark Side' Aluminum is everywhere, including in products that make us feel better, safer and cleaner. Like antacids, sunscreen and antiperspirants. But Austrian filmmaker Bert Ehgartner says theres another side to

发表于:2018-12-16 / 阅读(92) / 评论(0) 分类 VOA标准英语2013年(五月)

Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗? If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的,我想蛀了也没有关

发表于:2018-12-27 / 阅读(138) / 评论(0) 分类 口腔临床英语对话

TEST 3 Listen carefully to the conversations and short passages [00:07.99]and choose the best answer to each of the questions. [00:13.56]1.A)She is pitiful. B)She is too shy to apply. [00:33.41]C)They are afraid of her. D)She is intelligent. [00:41.2

发表于:2018-12-30 / 阅读(109) / 评论(0) 分类 英语六级听力练习集锦

I like to joke that I am who I am today because I did everything wrong in my 20's. I've always been fearless, and it often got me in trouble. I wasn't afraid to start a business, borrow a bunch of money, or quit a well-paying job to travel the world.

发表于:2019-01-08 / 阅读(93) / 评论(0) 分类 英语美文

Several accords signed to boost relations between Turkey and Cameroon Ntaryike Devine, Jr. | Yaounde, Cameroon 17 March 2010 It was the first trip to Africa for the Turkish president, who arrived in Cameroon yesterday accompanied by 120 businessmen,

发表于:2019-01-13 / 阅读(115) / 评论(0) 分类 VOA标准英语2010年(三月)

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

发表于:2019-01-14 / 阅读(119) / 评论(0) 分类 VOA标准英语2010年(十)月

AUDIE CORNISH, HOST: The White House is postponing most of its steel and aluminum tariffs for at least another month. Tariffs were due to kick on - to kick in on a number of countries at midnight tonight. They're part of a broader effort to crack dow

发表于:2019-01-16 / 阅读(162) / 评论(0) 分类 2018年NPR美国国家公共电台5月

DAVID GREENE, HOST: A lot of the aluminum and steel we use here in the United States is imported from other countries. And that, according to a report from the Commerce Department, is a threat to national security. Last week, department officials rec

发表于:2019-01-16 / 阅读(133) / 评论(0) 分类 2018年NPR美国国家公共电台2月

The few surfaces not covered by signs are often clad in a distinctive, dark green-gray, striated aluminum siding. 这仅存的没有被商标遮盖的建筑,一般都被包裹在有特色的阴暗铝灰条纹的铝制外壁板之中。 Take-out san

发表于:2019-01-18 / 阅读(145) / 评论(0) 分类 TED演讲商业篇

Ah yes.The ol' fluoride rinse at the dentist. Not pleasant. But hey, good for your teeth, right? 没错,这是牙医洗牙用的含氟漱口水。确实够闹心的。但毕竟对你的牙齿有益不是吗? Well now materials scientists have been

发表于:2019-01-20 / 阅读(117) / 评论(0) 分类 2018年科学美国人1月

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O

发表于:2019-01-20 / 阅读(158) / 评论(0) 分类 购物英语对话

A: Can you help me find a pan? B: Are you looking for a small, medium, or large pan? A: I want a big pan. B: Does this one look big enough? A: Yes, it's the right size, but it weighs too much. B: Well, what do you think of the aluminum pan? A: It's l

发表于:2019-01-20 / 阅读(164) / 评论(0) 分类 购物英语对话

SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo

发表于:2019-01-30 / 阅读(122) / 评论(0) 分类 科技之光

今天我们要学的词是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美国政府50多年来首次降低饮用水建议添加的氟

发表于:2019-02-02 / 阅读(115) / 评论(0) 分类 英语单词荟萃

U.S. retail sales fell half a percent in June providing more evidence that the U.S. economic recovery will slow down in the second half of the year. But the weaker than expected consumer spending appeared to have little impact on Wall Street as inves

发表于:2019-02-05 / 阅读(103) / 评论(0) 分类 VOA标准英语2010年(七)月

Apple made its case for consumers to buy its forthcoming smartwatch, positioning the device as a way to handle the brief interactions that fill our days, from meeting reminders to short messages to calling for a car. 苹果公司发布了新款智能手

发表于:2019-02-18 / 阅读(132) / 评论(0) 分类 阅读空间
学英语单词
Acanthoclymenia
acute coronary insufficiency
agfa color film
architectural meteorology
arcuk
argyrosomus argentatus pawak
arundinaria linearis
automatic rotary copying shaper
bearbind
Bilitrast
bonified
call center
chafewort
channel pulsse synchronization
colored graph
costume party
cotton sled
crackle
Craniopharyngealpouch
crotonoyl
CSSH
Davis's quadrant
degladiation
double-range voltmeter
DRDRAM
electric contact thermometer
ettals
even off
exodus project
extremity girdles
fast packet
flowergirls
fuel pod
fusible salt
general disturbance
genus haastias
guanaja
Guyana dollar
hematoscopy
high-pressure jet grouting
human understanding
Icy Bay
implanted channel
improvement problem
in daylight
indicator element
interlobar empyema
internal analog transmission
intrachromosome
Joranger
khellin
kick-butt
kine(to)-
LED printer
localized level
metachronism
minizone
minor isotopes safeguard technique
mint price of bullion
monofrequency radiation
nipponomyia symphyletes
package of programming
paediatric diagnostics
painslut
paligorskite
PIRS
post feminist
premammalian
proportional unit of body,body cun
quadraticss
quickreturn
red pimpernels
rhagadia mammae
self-induced e.m.f.
sequence equipment
shopping centers
Sinn Bishr, Jab.
slashes
social increase rate of population
spiral lobe type compressor
stearodermia
subtask
sulfamethylthiadiazole
super draw
surflan
Susat
swoops in
synaptic potential
thaumaturgist
timours
to bat around
translatable
under-read
unneccessary
untractably
Vakern
vector graphics
viscous flow theory
waterplane area coefficient
wire spoke wheel
yabbering
Zamboanga Chavacano