单词：silica geothermometer
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INTRODUCTION TO ACT I Today on TUNING IN THE U.S.A., WE ARE AT THE Stewart home. Grandpa is watching television with Robbies friend Alexandra Pappas. She is there because she is waiting to meet Robbie when he comes home from school. Suddenly she feel
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Many professions have their own words and expressions. This is true for the medical profession. Doctors use many technical terms that most people do not understand. But there are also expressions we use every day to tell about a persons health. Let m
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Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,
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When a child feels sick, one of the first things a parent does is reach for a thermometer. That common reaction got one man thinking. Inder Singh is a health policy expert. He wondered what if the thermometer, in addition to measuring body temperatur
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必备知识4:一些必要的词根(stems) -anthro-,-anthropo- human anthropology -aster-,-astro-,-stellar- star asterisk -audi-,-audit- hear audience -auto- self autograph -bio- life biology -capit- head, chief capital, captain -ced-go, move,yield p
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Temperature 温度 Temperature is how cold and how hot the outside air is. 温度是指外面空气的冷热程度。 It is measured by a thermometer. 可用温度计测量。 Also, people feel temperature with their bodies. 人们的身体也能感受
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AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be
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By Zulima Palacio Washington 26 September 2007 The organization that runs George Washington's estate near Washington, D.C. opened to the public a typical slave cabin from the 18th century. Most of those present at the dedication say the tiny house br
2007年VOA标准英语（九月）
By Jim Malone Washington 02 January 2007 State Funeral service at the Washington National Cathedral for former President Gerald R. Ford, 2 Jan. 2007 Official Washington bid farewell to former President Gerald Ford on Tuesday. Mr. Ford, the 38th pres
2007年VOA标准英语（一月）
Russian President Dmitri Medvedev has signed decrees granting formal recognition to the Georgian breakaway regions of Abkhazia and South Ossetia. But VOA Moscow correspondent Peter Fedynsky reports analysts say the move could promote separatism in R
VOA标准英语2008年（八月）
The United Nations is appealing for more than $58.5 million to provide emergency assistance to tens of thousands of people affected by the crisis in Georgia over the next six months. Aid agencies report their biggest problem remains one of access. L
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Geophysicist Probes Ocean's Secrets Today, Pitman is a distinguished professor of geophysics at Columbia University, and the recipient of many of his fields most coveted honors. Even though he is now in his 80s, Pitmans animated manner makes it easy
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GeographyMeetsSocialMediaonGeosocialSites Theres a well-worn phrase in real estate: location, location, location, meaning that where a property is located, alone, means more than anything else when it comes to assessing its value. But location is get
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KELLY MCEVERS, HOST: We're going to hear about something called geofencing. You might know about it. But if you don't, it's wireless technology that tracks mobile devices entering and exiting a specific area. Up to this point, it's mostly been used b
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AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin
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U.S. President George Bush says Russia must not lay claim to the breakaway Georgian republics of South Ossetia and Abkhazia. VOA White House Correspondent Scott Stearns reports, Mr. Bush says all Russia forces must leave Georgia. Russia says there i
VOA标准英语2008年（八月）
I Would Pick More Daisies When the late Nadine Stair of Louisville, Kentucky, was 85 years old, she was asked what she would do if she had her life to live over again. I'd make more mistakes next time, she said. I'd relax. I would limber up. I would
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