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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(552) / 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(249) / 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(223) / 评论(0) 分类 创新英语

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(159) / 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(154) / 评论(0) 分类 Scientific American(三)月

Did you know that there could be more bacteria living in your mouth than there are people on earth? 你知道吗,寄居于你口中的细菌有可能比全世界的人口数还多? Bacteria love our mouths because the livin is easytheres plenty o

发表于:2018-12-28 / 阅读(192) / 评论(0) 分类 初学者听力文摘精选

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

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 s

发表于:2019-01-07 / 阅读(133) / 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(157) / 评论(0) 分类 VOA常速英语2008年(二月)

HEALTH REPORT -August 7, 2002: Bacteria in Food This is the VOA Special English Health Report. An American food company recently recalled about eight-million kilograms of ground beef that is used to m

发表于:2019-01-07 / 阅读(133) / 评论(0) 分类 健康与环境

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(278) / 评论(0) 分类 2015年VOA慢速英语(七)月

Around the world, cesarean births are on the rise, and many experts think that's a bad thing. Now, a new study looks at one way that babies delivered by c-section are different. The number of surgical deliveries has been increasing for years. Some ce

发表于:2019-01-13 / 阅读(140) / 评论(0) 分类 VOA标准英语2010年(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(197) / 评论(0) 分类 VOA标准英语2011年(六月)

ROBERT SIEGEL, HOST: Now some good news, especially for babies around the world. Scientists in the U.S. and India have found an inexpensive treatment for a common infection. It could save hundreds of thousands of newborns each year. The treatment com

发表于:2019-01-16 / 阅读(170) / 评论(0) 分类 2017年NPR美国国家公共电台8月

DAVID GREENE, HOST: For the first time, scientists have figured out just how many tiny critters are living inside your kitchen sponge. Now, don't fear. NPR's Michaeleen Doucleff says there is something you can do about this. MICHAELEEN DOUCLEFF, BYLI

发表于:2019-01-16 / 阅读(164) / 评论(0) 分类 2017年NPR美国国家公共电台9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(173) / 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(145) / 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(128) / 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(153) / 评论(0) 分类 双语有声阅读
学英语单词
absorption column
acceptance gauge
agricultural wages board
Am star
anagogies
antiseismatic
average profit
black cancer
C-FACT
capillary pulse
CBEF
charged state
China Light Industry Engineering Corporation
chloroanisole
cotton bolls
counterbalance barrier
customs boundary
cut paraboloid reflector
DB/DC (data base/data communication)
Dingba
dip-bucket
disentrain
drum and bugle corps
elastic after effect
encyclophoria
environmental quality
eunuchoid voice
eyepiece focal length
ferrite tape
firming chisel
foxlings
free choice of partners
fuzzy concept
gallivanted
gaudens
general mortgage
gets off my chest
glushinskite
Grosvenor Mountins
guarantor name
high resistance load
horizontal layers
inelastic impact
Japan Towing Tank Conference
Japanese sandfish
jumbie bead
knock-knee
lokorys
Magna Graecia(Greater Greece)
marking charges
maximum-likelihood sequence estimation equalization
mortiseandtenon
multichannel transmitter
nalfons
navel gazing
New Age Movement
nondrip
nonscaled
Omatako
on the condition that
Orgaboral
pause memory
Period of Container Leasing
Pertya phylicoides
piezoelectric pickup
pizza-ghetti
playback equalizer
process-product
pseudoendometritis
public bank
qanbar
ramus digitalis volaris
recession constant
roadside station
rumpoles
Ryzelan
scobby
selective system of gear changing
semiconductor ram
Slavistic
social unit
spigelian
St-Cyprien
stabilized shunt motor
standard pipe bender
stearyl monoglyceridyl citrate
sterling exchange system
streptidine
sub-sovereign
Synotis xantholeuca
syntedril
telegraphic transfer selling rate
tellinides ovalis
tertian malarial fever
That will be the day.
timelessness
timing schedule
topping processing
toy train
tremelliform
two-pipe hot-water heat-supply network
vaporizing tube nipple