单词:infectious bacteria
单词:infectious bacteria 相关文章
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
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
[00:00.00]Unit 25 [00:05.80]Reading and speaking [00:08.24]A changing city [00:10.53] For centuries,Beijing has been one of China's [00:13.47]most important cities. [00:15.69]Originally a place for emperors and officials, [00:18.14]today it is a weal
Voice 1 Welcome to Spotlight. Im Adam Navis. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Kajal is nine years old. She lives i
This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? We all know to wash our hands after handling raw poultry. But next time youve just cruised down the interstate behind a truck full of chickens or Thanksgiving turkey
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Its graduation season. And some scientists got to wondering whether the folks who shake hundreds of hands while passing out diplomas run the risk of coming
如果你每天都在办公桌前工作,你要注意了.你知道你每天使用的办公桌上有多少细菌吗?数字惊人. 办公室键盘比马桶还脏 Daily Mail: Millions of us spend our days slaving over a keyboard. But lurking between the
DEVELOPMENT REPORT -February 18, 2002: Infectious Diseases By Jill Moss This is the VOA Special English Development Report. The World Health Organization and several other United Nations agencies are
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
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? A direct effect on human health related to climate change is the likely increase in infectious diseases transmitted by insects or through contaminated water. In the Marc
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
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
By Lisa Schlein Geneva 23 August 2007 The World Health Organization warns new and emerging infectious diseases are spreading rapidly around the world threatening the health, economies and security of all nations. This year's World Health Report says
Tools to Fight Infectious Diseases Rely on Public Health Programs A simple bite from a mosquito can end someone's life or change it forever. A sneeze, a handshake or even sharing of a desk can do the same thing. That's how H1N1 - or swine flu - sprea
This is the VOA Special English Health Report. A boy with HIV at a children's home for AIDS orphans in Nairobi, Kenya AIDS researchers had important news last week. Two studies in Africa confirmed tha
BEIJING, Aug. 7 (Xinhua) -- Infectious diseases claimed 1,669 lives on the Chinese mainland in July, with AIDS contributing to 70 percent of the deaths, the Ministry of Health (MOH) said Tuesday. A total of 5,552 AIDS cases, which is categorized as a
A recent study found almost 60 percent of surgical residents admitted they had sustained needlestick injuries when they were medical students. Blunt tip needles, such as this one, are considered safer A recent study shows that medical students and ho
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
The outbreak of SARS, bird flu and Mexican swine flu has warned us that new infectious diseases are emerging at an unprecedented rate around the world and spreading faster than ever. It is now generally accepted that global epidemics are threatening
We are going to catch things in this podcast, and yes there will be a new phrasal verb as well to catch up with. Like many common English verbs, catch is irregular. The past tense of catch is caught. So, I catch, I caught, I have caught. If you look