单词：archeabacteria
单词：archeabacteria 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
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
新东方背诵文选
Have you ever considered sky divin [00:03.08]Thousands of people learn to sky dive each yea [00:06.82]The first major step to learn is proper touch down techniqu [00:11.57]That means learning how to fall properly,initially from a four-foot platfor [0
考研英语听力基本功4
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
创新英语
[00:04.21]Listen to the dialog and fill out the table. [00:11.25]I'm going to visit Uncle Jack's farm tomorrow [00:15.30]with my father. [00:17.33]Wow,that's exciting,when are you leaving? [00:22.23]At about eight o'clock. [00:24.42]And we'll arrive
清华大学版小学英语(一到六年级)
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
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
Scientific American(三)月
Idiom: Made of money ( very rich ) Hit the book: Miracle Shortcut Frightened Arch Trap Investigate
趣味青春英语
By Cynthia Kirk ENVIRONMENT REPORT - February 22, 2002: Monarch Butterfly Deaths in Mexico This is the VOA Special English ENVIRONMENT REPORT. A severe winter storm in central Mexico last month killed
健康与环境
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
VOA常速英语2008年（二月）
By Marissa Melton Washington 24 January 2007 Peace activists have announced they will hold an anti-war rally on the National Mall in Washington Saturday, the first since Democrats assumed control of Congress. Organizers say they have given up on sway
2007年VOA标准英语（一月）
By Marissa Melton Washington 27 January 2007 Peace activists have held another anti-war rally on the National Mall in Washington Saturday, the first such event since Democrats assumed control of Congress. Organizers say they hope participants will st
2007年VOA标准英语（一月）
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
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
2015年VOA慢速英语(七)月
Since the 18th century, St. Louis, Missouri has offered travelers a hub to begin their adventures into the western frontier. Its nickname the Gateway to the West is symbolized by the towering focal point of the St. Louis skyline: the Gateway Arch. It
VOA标准英语2010年(十一)月
The two steel truss arch halves of an extra-big bridge over the Lancang River were connected Tuesday morning after two vertical turns. The bridge, which sits 270 meters above the Lancang River, is a part of the DaliRuili Railway in southwest China's
2016CRI中国国际广播电台
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
英语新闻
MEXICO CITY, May 9 (Xinhua) -- Mexico's national team holds on to its 20th spot as soccer's world governing body FIFA released the latest world rankings on Wednesday. Mexico, known as the Tricolor for its red, white and green flag-colored uniforms, c
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