时间:2019-01-02 作者:英语课 分类:科技之光


英语课

SCIENCE REPORT

February 13, 2002: Oral Health Study


By George Grow



This is the VOA Special English SCIENCE REPORT.


A new report examines the problem of tooth and gum disease in the United States. It found that many Americans
are not doing enough to care for their teeth. The report says the biggest problems are the lack of dental health care
for all Americans and the lack of services to prevent disease.


A group called Oral Health America in Chicago, Illinois, released the findings. It used information from recent
government studies to prepare the report. The group’s leader says the report shows the nation needs to be more
concerned about the oral health of its citizens.



One major problem is tooth decay 1. Bacteria in the mouth act on sugars that remain on the teeth
after eating. This action creates acid that damages the tooth. The damage appears as a hole in
the tooth called a cavity 2. The part of the tooth that has been destroyed by the acid is called tooth
decay.


There are many reasons for diseases of the teeth and gums. The report says many areas in the
United States fail to add enough fluoride to public drinking water. It notes that ten states failed
to provide fluoridated water for at least fifty percent of their population. Fluoride is an element
found in rocks and minerals. Drinking fluoridated water is one of the best ways to prevent tooth
decay.


The report shows that many Americans do not have their teeth examined by a dentist or trained expert. In most
states, one-third or more of the citizens failed to visit a dentist at least once last year.


In addition, a person ’s earnings 3 seemed to have a major effect on the services received. Poor people are less
likely to visit a dentist. More than one-hundred-million American adults and children do not have insurance to
help pay for treatment by a dentist.


One area of progress is increased public understanding of oral health issues. The report notes that several states
now employ dental health directors. Oral Health America says the increased understanding is partly a result of
American Surgeon General David Satcher. Two years ago, he released a report on the importance of oral health.


His report noted 4 that more than thirty-thousand Americans develop cancers in the mouth or throat every year. It
also found that tooth decay is the most common disease among American children. Fifty percent of all six-yearold
children already have tooth decay.


This VOA Special English SCIENCE REPORT was written by George Grow.



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vi.腐烂,衰落;n.腐烂,腐朽,衰败状态
  • The vegetables have begun to decay.那些蔬菜已开始腐烂。
  • Our powers decay in old age.我们的体力在老年时就衰退。
n.洞,穴,凹处,龋洞
  • There's a cavity in the boy's tooth.这个男孩的牙上有一个洞。
  • The dentist carefully located the filling in the cavity.牙医小心地把填塞的东西放入牙洞里。
n.工资收人;利润,利益,所得
  • That old man lives on the earnings of his daughter.那个老人靠他女儿的收入维持生活。
  • Last year there was a 20% decrease in his earnings.去年他的收入减少了20%。
adj.著名的,知名的
  • The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
  • Jim is noted for arriving late for work.吉姆上班迟到出了名。
学英语单词
-ce
a big name
AAAB
al fintas
alterns
ayisha
benign prostatauxe
best polynomial approximation
blank file
braches
breast brace
broadscales
Bupleurum yinchowense
cascade bend
cease to be
cmpr
coefficient of horizontal subgrade reaction
coin money
collector coupling
compulsory fund
concealed heating
Coumarouna odorata
cube technique
culmorin
dead oil area
Diatomaceae
economic aim
email readers
equilibrium democracy
falling rate(drying) period
flat bottom airfoil
folium photiniae
generation or cohort rate
genus Piqueria
get better soon
Glare screen
green resin
guy
gynecotokological therapeutics
handcarts
hansels
input sensitivity
integumentary sense organ
klements
last rites
lateral reticular nucleus
Lerum
long-range elasticity
luws
magnet grate
Marie Louise I.
memory section
micropayments
MKP-X
moschee
national standard reference data system (nsrds)
negative stiffness
odontoglyp
optional equipment
orthodox
parallel chorisis
plana pelvis
point-source radiator
Ponzi scam
pool hall
PowerCap
prednisolone bisuccinate
present problems
Pribilof Is.
protein sparing action
PTTH
racelines
real part
refocillate
salafs
sand-blastings
Selles-St-Denis
siphon action
slag lime
society at large
Southern Star
speech volume indicator
steel grating
Strassman-type cutter
succeeding troops
superheavy nucleus
tert.-amyl chloride
to probe
topological spaces
trimerizations
truss head rivet
two-spar structure
ulex europaeuss
universal cord circuit
unsystematizable
Upper Burma
warp printing
water fire main line
wilfuller
wind-shift line
wire counter
y-junction