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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
acidotrophy
Adwick le Street
aggrading river
alisma plantago-aquaticas
amnionic vesicle
anasstomotic
arsenian bournonite
atomic mass number
Attaran
avidin-biotin complex
be easy prey
butt diameter
carbolized gelatin
centesimated
Changyong
CJD
collisionless Boltzmann equation
colony formation of micro-organism
Contrykal
cotton-spinners
cupreous manganese
cytrimycin
database creation
derrick table
dial up characteristics
discussants
double-toggle
driver tool
dry beach
engine start
epilesional
epirogenesis
Erfde
euborellia plebeja
external hemorrhoidectomy
ferrite waveguide
festschrift
fraisier
gallop rhythm
general ledger audit
godrooned
Grastite
grushin
Haligonian
Hard astarboard
historical-criticism
humus coal
icier
inconsequentia
iniad
John Buchan
karanga (maori)
kiloton energy
Krupac
laser doppler displacement meter
leaf-nosed snakes
lemon curds
locus-specific(hadom 1955)
magnesium deficiency
mammets
Markstay
martensite cold working
mcnarry
Mesozoa
Microsoft Excel
music-lover
no-parking
Notaspidea
optical aspherical surface
pilea pumillas
potassium arsenite
pre-flops
premeditated
production verification test
profile peak
R out of Ncode
re-cord
reinforced concrete frame
retained percentage
Rokiciny
scare the daylights out of
schizochroism
self-threading shuttle
semi-window
shaft drier
silly season
silver-copper alloy
similar device
skarnoid
steep-sideds
stereo sound television (mts)
stocksaver
subcutaneous whitlow
suppressive wiring technique
thermophytes
Trichostrongylida
underwithholding
vernal equinoxes
watertight joint
Web file system
wedge filter
Yalta agreement