VOA慢速英语2009-SCIENCE IN THE NEWS - Ancient Footprints Let Exp

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Bob Doughty. This week, we will tell about evidence of early human ancestors. We also will tell about the health effects of hopeful feelings. And, w

VOA慢速英语2011--Bat Populations Are Important for Agricu

EXPLORATIONS - Bat Populations Are Important for Agriculture and the Environment BARBARA KLEIN: Im Barbara Klein. MARIO RITTER: And Im Mario Ritter with EXPLORATIONS in VOA Special English. Today, we learn about the environmental and agricultural imp

2006年VOA标准英语-Pakistan Combats Growing Environmental Menace

By Benjamin Sand Islamabad 31 July 2006 Villagers of Thar desert draw water from well (File photo) Pakistan's environment is in trouble. Overworked land and decade-old drought mean forests are disappearing, wells are drying up and deserts are spread

2007-09-08, Sammer Gateway: 卡尔斯贝洞窟国家公园

It is early evening and soon this amphitheater will be standing room only for the evening show. Bats, hundreds of thousands of Mexican Free-tailed bats, are hungry tornado that swirls out of New Mexico's Carlsbad Caverns each night in search of food.

2007年VOA标准英语-Scientists Begin Expedition to Trace Source of

By Melinda Smith Washington 09 August 2007 The World Health Organization says a mother's milk is the perfect food for a newborn baby. But worldwide statistics show that breastfeeding is frequently abandoned right after birth. VOA's Melinda Smith ha

VOA标准英语2014--类人猿感染埃博拉病毒

Ebola Also Strikes Great Apes 类人猿感染埃博拉病毒 While efforts continue to contain the Ebola outbreak among people in West Africa, researchers have a new technique to study Ebola among the Great Apes. Thousands of the primates are believe

VOA常速英语2014--High Frequency Traders Under Scrutiny 美司法部调查高频交易

High Frequency Traders Under Scrutiny 美司法部调查高频交易 The U. S. Justice Department is investigating the relationship between high frequency trading firms and major exchanges -- and regulators in Washington and the state of New York are

英语听力：自然百科 地球力场 Earth's Force Field—17

We drive them about 20 miles away to the North, and release them, and we track them as they try to fly back home. We drive them about 20 miles away to the North, and release them, and we track them as they try to fly back home. Hes up, OK. Holland wa

英语听力：探索发现 2013-03-10 猛玛象进城记 Mammoths to Manhattan—18

This mass roosting takes place soon after the summer nesting season. Its a chance for the birds to molt before they fly south for the winter. As Vauxs swift numbers reach a peak in mid September, they attract attention from the locals. Coopers hawks

2007年VOA标准英语-Indonesia Combats Widespread Childhood Anemia

By Chad Bouchard Jakarta 11 June 2007 An Indonesian public health foundation is waging an anti-anemia campaign in Jakarta, where some schools have reported more than half their students are anemic. As Chad Bouchard reports from Jakarta, medicine and

科学美国人60秒 SSS 人类回声器原理类似蝙蝠回声

Human Echolocators Use Tricks Similar to Bats Many bats use a system similar to sonar to navigate in the dark. They send out high frequency sound, sometimes as clicks, and get information about their surroundings by the timing and quality of the soun

英语听力文摘 English Digest 327、吸血蝙蝠能挽救生命？

Bat Spit 蝙蝠的唾液 Anyone who reads gothic fiction will tell you that vampires are bad news. People who read modern medical journal s , however, might disagreein fact, they think vampires just might help save lives. The kind of vampire Im talki