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Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are u

发表于:2018-11-28 / 阅读(547) / 评论(0) 分类 新概念优美背诵短文50篇

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is abo

发表于:2018-12-01 / 阅读(241) / 评论(0) 分类 新东方背诵文选

A new study into the hygiene of supermarkets has found that shopping carts are dirtier than the stores bathrooms. Microbiologist Dr Charles Gerba of the University of Arizona conducted research on the handles of 85 carts in four American states. He r

发表于:2018-12-07 / 阅读(222) / 评论(0) 分类 创新英语

This is the VOA Special English Health Report. Tuberculosis killed one million three hundred thousand people around the world in two thousand seven. In addition, almost half a million people who were infected with tuberculosis and with H.I.V. also d

发表于:2018-12-15 / 阅读(149) / 评论(0) 分类 VOA慢速英语2009年(三)月

Study: Neglected Tropical Diseases Surfacing in Central Asia Many of the bacterial and parasitic worm infections commonly associated with the tropics are becoming rampant in some Central Asian countries in the former Soviet Union. That's the finding

发表于:2018-12-16 / 阅读(156) / 评论(0) 分类 VOA标准英语2011年(十月)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Sometimes a bit of bacteria can be just what the doctor ordered. If you prize yogurt for its active cultures, you know what Im talking about. Now a new s

发表于:2018-12-24 / 阅读(154) / 评论(0) 分类 Scientific American(九)月

They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba

发表于:2018-12-24 / 阅读(150) / 评论(0) 分类 Scientific American(三)月

How Insects Fight Bacteria And Parasites Imagine that youre an insect, and that youve fallen ill because some bacteria or parasites have invaded your body. If you want to make it to a ripe old bug age, your body will need to fight off these invaders.

发表于:2018-12-31 / 阅读(143) / 评论(0) 分类 英语听力文摘 English Digest

This is the VOA Special English Health Report. Tuberculosis killed one million three hundred thousand people around the world in two thousand seven. In addition, almost half a million people who were infected with tuberculosis and with H.I.V. also di

发表于:2019-01-02 / 阅读(137) / 评论(0) 分类 2010年慢速英语(三)月

By Ruth Reader Washington, DC 13 February 2008 There is growing concern around the world over illnesses caused by new antibiotic-resistant bacteria, or so-called superbugs, and the decreasing effectiveness of antibiotics to treat infections. Earlier

发表于:2019-01-07 / 阅读(156) / 评论(0) 分类 VOA常速英语2008年(二月)

This is the VOA Special English Health Report. Bad teeth can be painful -- and worse. They can even be deadly. Infections of the gums and teeth can release bacteria into the blood system. Those bacteria can increase the chances of a heart attack or

发表于:2019-01-11 / 阅读(129) / 评论(0) 分类 VOA慢速英语2009年(三)月

Health Report - New Effort to Fight 10 'Neglected' Tropical Diseases 健康报道 - 抗击十种被忽视热带病的伦敦宣言 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 A new campaign aims to f

发表于:2019-01-12 / 阅读(203) / 评论(0) 分类 2012年VOA慢速英语(二)月

HealthReport-GutBacteria:WeAreWhatWeEat This is the VOA Special English Health Report. The human digestive system is full of bacteria -- mostly good bacteria. These organisms help break down food so the body can use the nutrients. Scientists are expl

发表于:2019-01-12 / 阅读(188) / 评论(0) 分类 2011年VOA慢速英语(九)月

Experts: Let Produce Dry Out to Avoid Bacteria American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables. They say gathering the crops at least 24 hours after rainfall incr

发表于:2019-01-12 / 阅读(274) / 评论(0) 分类 2015年VOA慢速英语(七)月

E coli: Good Bacteria Gone Bad As a major outbreak of a highly toxic strain of E. coli bacteria continues to sicken residents of Europe, medical experts are racing to find the source. E. coli doesn't usually cause any trouble, says University of Minn

发表于:2019-01-14 / 阅读(195) / 评论(0) 分类 VOA标准英语2011年(六月)

Cheaper, Safer Pill Targets Tropical Parasite Scientists have developed a new version of a drug used to treat leishmaniasis. The new formulation may help better battle this tropical parasitic disease. Leishmaniasis is transmitted by the bite of certa

发表于:2019-01-14 / 阅读(152) / 评论(0) 分类 VOA标准英语2011年(十月)

Cigarettes Are Bacteria Sticks, Too A study in the journal Environmental Health Perspectives finds that cigarettes harbor various species of bacteria, some of which cause disease. Karen Hopkin reports This January, the country Turkey will join a hand

发表于:2019-01-30 / 阅读(170) / 评论(0) 分类 60秒科学

European and World Health Organization scientists say a deadly outbreak of E. coli bacteria that has killed 18 people is a rare and virulent(致命的) strain of the bacteria. The latest victim died Wednesday night in Germany. The United Nations agen

发表于:2019-02-04 / 阅读(140) / 评论(0) 分类 英语新闻

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Ac

发表于:2019-02-07 / 阅读(125) / 评论(0) 分类 英语新闻

48 Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bac

发表于:2019-02-17 / 阅读(148) / 评论(0) 分类 双语有声阅读
学英语单词
acute phase protein
alpha radiations
arsenical sheep dip
arveladze
asymmetrical afterbody
ballplayer
bodeau
bowstaff
bypass gas damper
casual sex
Challenger Plateau
clandestine communication organization
coke(-oven) gas
colo(u)r switching
color mobile video tape recorder
concava
constitutum possessorium
controlled frequency
Cragg
diamondwork
electric stress tensor
endotransglucosylase
feminacy
Fereol's nodes
fixed-tuned cavity
flavopurpurin
foeto-
fuel management
fuzzy appliance
Garg.
genus vincas
go swimming
Good Conduct Medal
good merchantable brand
heafey
horizontal belt
horn reed
hot caustic bath
imagery assessment
indicate
infiltration gallery
intravascalar agglutination
isopotentiality
joint pole
Křižanov
Laeso
Lappvik
localized fringe
magnetotherapists
melbinum
mixed-breed
neoevolutionism
nethermind
nissl's body
nonresponses
OH-duphan
Pankrat'yeva, Ostrov
pharmaceutical preparations
plan of the course
platinum
play down on
poorless
PPSO
primary variations in depth
Psophia
pulsed resonance spectroscopy
qida
rack shaping machine
rosemark
safe-guard door lock
Sardão, C.
Savage, Richard
screwing die
sector-type lock gate
securitywise
semi-conductors
septingentenary
sets foot
shipbuilding ways
shockproofs
shottage
slide bushing
state supreme courts
statistical test planning
suprahistorical
syntropic
tetrabromobisphenol a
teutonists
theopathic
trade income
triflates
unexperient
ungradable opposition
unsilvered plate
unsisterliness
vertical matress suture
vertical variation
war-whoops
wearing someone out
xtal osc (crystal oscillator)
Young experiment
zinc silicate type crystalline glaze