单词:Spiegler's reagent
单词:Spiegler's reagent 相关文章
A: I believe that you called me? B: Oh, hi. Thanks for getting back to me quickly. A: Why did you call me? B: I was calling about your son. A: Did he do something wrong? B: Your son was acting up in class. A: What do you mean? B: He was talking and c
A: Hello, I'm returning your phone call. B: I'm glad that you could get back to me so fast. A: No problem, but what were you calling about? B: I needed to talk to you about your son. A: Is he messing up in school? B: He was acting up in class one day
It is often said that cats have nine lives, that they are lucky enough to escape from danger again and again. Here is a science fiction tale about how one such lucky escape by a cat led to a discovery that was able to change the course of people's l
SCIENCE IN THE NEWS - January 29, 2002: Aspirin By Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with SCIENCE IN THE NEWS, a VOA Special English program about recen
Lois has a headache. The headache started one hour ago. She doesnt know why she has a headache. She never gets headaches. She never gets sick. Lois is a healthy woman. Where did her headache come from? Was it something she ate? Was it something she d
Education Report - How Much Should a Teacher's Job Depend on Test Scores? This is the VOA Special English Education Report. Students in Washington, DC, will return to classrooms this month to begin a new school year. But at least five percent of thei
我是一名数学家,并且我希望站在你们的屋顶上。当Ron Eglash遇到许多非洲家庭时,他总是这样介绍。当时,他正在研究非洲的村落中随处可见的分形图案。
Berlusconi's wife to divorce him 贝鲁斯科尼的妻子与之离婚 Ms Lario is the PM's second wife The wife of Italian Prime Minister Silvio Berlusconi has confirmed that she will file for divorce. Veronica Lario reportedly said she could not be with a man
By Noel King Goma, DRC 22 November 2007 Food prices are skyrocketing in eastern Congo's volatile North Kivu province as Laurent Nkunda's rebels and the Congolese army engage in what aid workers and the United Nations are calling a game of stopping an
SCIENCE IN THE NEWS - Ocean Storms and the Science of Nature's Power CHRISTOPHER CRUISE: This is SCIENCE IN THE NEWS in VOA Special English. Im Christopher Cruise. SHIRLEY GRIFFITH: And Im Shirley Griffith. Today we tell about the science of severe o
Fukushima Farmers Worry About Region's Brand With the crisis at the Fukushima Daiichi nuclear power plant set to continue through most of this year, many people in the region are worried about the long-term impact on the Fukushima brand. Nowhere can
Volunteers Help Revive LA's Concrete River Thousands of volunteers turned out on a recent weekend to remove the trash that has been deposited by winter rain storms. The Los Angeles River was lined with concrete in the late 1930s and 1940s, after year
By Mil Arcega Washington 05 July 2007 Sirivat Voravetvuthikun, the Thai sandwich man Ten years after the Asian stock market plunge left him $30 million in debt, a 57-year-old Thai entrepreneur has become a symbol of optimism and perseverance in his c
HEALTH REPORT – November 13, 2002: Aspirin After Bypass Surgery By Jerilyn Watson This is the VOA Special English Health Report. A new study says the common drug aspirin greatly reduces life-threate
US Could by 2017 Be World's Biggest Oil Producer The International Energy Agency says that by 2017 the United States is likely to overtake Saudi Arabia as the world's biggest oil producer. The Paris-based energy agency said Monday in its annual forec
New Supercomputer Could be World's Fastest Scientists at the Oak Ridge National Laboratory in the U.S. state of Tennessee have unveiled what could be the worlds fastest supercomputer. The new computer, named Titan, is capable of making more than 20,0
Premier says China's economic growth stablizing BEIJING, Oct.17 (Xinhua) -- China's economic growth has started to stabilize and witness positive changes with economy running well in the third quarter, said Premier Wen Jiabao. China's economy will co
The United States Women's Olympic ice hockey team will be relying on a mixture of youth and experience as they prepare for the 2010 Winter Games this February in Vancouver, Canada. Women's squads from eight different nations will be battling for the
RIO DE JANEIRO, March 8 (Xinhua) -- Brazilian tennis legend Gustavo Guga Kuerten received his official induction into the Hall of Fame of tennis on Thursday. The athlete received the prestigious honor in Sao Paulo by the current directors of the Hall
Be still, said Jack. Jack and Annie stood frozen as an elephant steppedout of the shadows. It waded into the pond anddipped its trunk into the water. Oh, wow, said Annie. Jack breathed a sigh of relief. An elephant wasn'tgoing to chase them and eat t