单词:space-network high polymer
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Part I Writing (30 minutes) Directions: For this part, you are allowed 30 minutes to write a short essay entitled On the Importance of a Name. You should write at least 150 words following the outline given below. 1. 有人说名字或名称很重要 2. 也有人
Broadcast: Jan 29, 2003 China says it will launch its first astronauts into space later this year. Beijing is hoping the manned space program will boost commerce, science, and security. But, those ben
Experts Say More Research Needed to Foil Cyber It doesnt matter who you are or where you live - if you have access to a computer, you are a potential target for cyber criminals. And its not just individuals at risk. Earlier this month, U.S. Attorney
EXPLORATIONS - High and Fast: the X-15 Reached the Edge of Space EXPLORATIONS -- a program in Special English by the Voice of America. Today, Doug Johnson and Frank Oliver tell about the first airplane that flew out of the Earth's atmosphere. It was
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t
This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because
Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c
Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s
Have Scientists Discovered a Radio Space Shield? Space, it turns out, is not a very safe place for electronic devices. High-energy space particles can cause serious problems for satellites and electronic equipment, even on the Earths surface. These p
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor
Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene
UnderseaCableCouldRevolutionizeOceanography This past April, there was a big volcanic eruption in Americas Pacific Northwest. If you missed it, you're not alone. It happened under the ocean off the northern Oregon coast. Since then, several research
This is the VOA Special English Education Report. Some American high schools are for students with special interests, like science or the arts. New York City even has a program for those interested in the food service industry, called Food and Finan
Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o
'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded
Part 2. Network and networking. A. keywords. connection, systems, broadcasting, television, computers, relations, Vocabulary. costly. A1. Listen to a report about the word network. Supply the explanation for the word. New things in this world changed
By Lisa McAdams Moscow 06 April 2007 Watch video by Valer Gergely American computer software entrepreneur Charles Simonyi is reportedly paying about $25 million to fulfill his childhood dream of flying in space. He follows in the footsteps of Dennis
4G, its short for the fourth generation of standards for mobile phone communication technology. And, it provides ultra-broadband Internet access. 4G是手机通信技术第四代标准的简称。而且,4G网络系统可以提供超宽带互联网接
在世博园宝钢大舞台的中国元素展区,有一个极富老上海特色的旗袍现场展示区,其中的旗袍盘扣现场制作环节吸引了众多游人驻足。如果用英语,我们要怎样介绍这种精致的传统服饰呢? 旗