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（1）http://www.unsv.com/voanews/specialenglish/scripts/2009/04/26/0040/Now, Words and Their Stories, a VOA Special English Program about American expressions. I'm Rich Kleinfeldt with some financial words and expressions used in business and the stock market.（2） Rick Aggeler says he discovered early in life that music is magic.RICK AGGELER: "Music made me feel like anything was possible."At the age of seven, a medical condition required him to have a brain operation. It also prevented him from playing sports. So his mother suggested that he learn to play drums instead.（3） kills about one million people a year and sickens another two hundred fifty million. Most of the deaths are in young children in Africa. Malaria causes twenty percent of childhood deaths in Africa.People become infected when they are bitten by mosquitoes carrying the malaria parasite

This is the VOA Special English Development Report. Nanotechnology uses matter at the level of molecules and atoms. Researchers are finding different uses for particles with a length of one nanometer, or one-billionth of a meter. These include things like beauty products and dirt-resistant clothing. But one area where many experts believe nanotechnology holds great promise is medicine. Last week, speakers at a program in Washington discussed using nanotechnology to improve health care in developing countries. The program took place at the Woodrow Wilson International Center for Scholars. Peter Singer at the University of Toronto says a nanotechnology called quantum dots could be used to confirm cases of malaria. He says it could offer a better way than the traditional process of looking at a person's blood under a microscope. In poor countries, this process is often not followed. As a result, sick people may get treated for malaria even if they do not have it. Such misuse of medicines can lead to drug resistance. Quantum dots are particles that give off light when activated. Researchers are studying ways to program them to identify diseases by lighting up in the presence of a targeted molecule. Experts say nanotechnology shows promise not just for diagnosing diseases, but also for treating them. Piotr Grodzinski of the National Institutes of Health talked about how nanotechnology could make drugs more effective. He talked about cancer drugs already developed with nanotechnology. He says if a drug can target a cancer locally in the body, then much less of it might be needed, and that means lower side effects. Andrew Maynard is chief scientist for the Project on Emerging Nanotechnologies at the Woodrow Wilson Center. He noted that Brazil, India, China and South Africa are currently doing nanotechnology research that could help poor countries. But he also noted that there is some risk in using nano-materials. He says nanometer-sized particles behave differently in the body and the environment compared to larger particles. Experts say more investment in research is needed to better understand these risks. And that's the VOA Special English Development Report, written by Jill Moss. Transcripts and audio files of our reports are at voaspecialenglish.com. I’m Steve Ember. w 里有很多。

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2014-4-6From VOA Learning English, welcome to This is America. I'm Steve Ember. April is National Poetry Month, and this week, Kelly Jean Kelly brings us some of the poems that Americans like best. Come along with us, on a journey through rhyme!April is National Poetry Month in the United States. The Academy of American Poets started the celebration in 1996. The goal was to help more Americans add poetry to their lives.The academy chose April as National Poetry Month because of a line in a poem. T.S. Eliot called April “the cruelest month” in his poem “The Waste Land.” And many Americans think April is the cruelest month. They must pay their income taxes by April 15th.National Poetry Month brings together publishers, booksellers, poetry groups, libraries, schools and poets around the country. They encourage people to write, read, and listen to poetry. In the southern state of Florida, the O, Miami Poetry Festival tries to bring a poem to every one of the 2.5 million people who live in the area. The group has dropped poems out of airplanes, sewn them into clothes, and put them on every bus in the city.Poetry is very popular in the United States. America even has a chief poet, known as the Poet Laureate. Robert Pinsky was the Poet Laureate from 1997 until 2000. He started the Favorite Poem Project, to find out which poems Americans liked best. Thousands of Americans wrote to Mr. Pinsky about their favorite poems. He chose 200 poems by poets from the United States and from many other countries. The poems are included in a book called “Americans’ Favorite Poems.” It was edited by Robert Pinsky and Maggie Dietz. We will read five of poems from the book by American poets.