VOA常速英语2013--帮助马达加斯加消灭蝗灾

Campaign Begins to End Locust Plague 帮助马达加斯加消灭蝗灾 More than a year after a locust plague was declared in Madagascar, a control program finally is about to begin. Massive swarms of the insects have damaged or destroyed large areas

英语听力：2012-01-20 从南极到北极 From Pole To Pole—2

The penguins stay when all other creatures have fled because each guards a treasurea single egg rested on the top of its feet and kept warm beneath the downy bulge of its stomach. There is no food and no water for them. And they will not see the sun

VOA常速英语2013--及早杀灭蚊虫预防疟疾

Killing Mosquitoes Early On及早杀灭蚊虫预防疟疾 Targeting mosquitoes in their early stages of life has the potential to greatly boost malaria control efforts and prevent thousands of new infections every year. A new study looks at the effec

VOA标准英语2012--Dallas Continues Spraying in Fight Against West Nile Fever

Dallas Continues Spraying in Fight Against West Nile Fever Many people in Dallas continue to work and play outdoors, but they are heeding warnings from health officials to protect themselves. Fifteen-year-old Macias says he has followed the news repo

英语PK台 第400期:从ABC开始扔掉字幕看《老友记》(91)

地点：美黑店内 人物：罗斯，店里的一位助手 事件：罗斯去做美黑，却在数数的时候出了问题。 Assistant: You've got to face the red light. When the red light goes on the spraying is about to start so close your eyes

英语听力：2012-01-22 从南极到北极 From Pole To Pole—3

But they are hungry and eager to reach their mother whos delayed feeding them on this special day. Now she lures them with the promise of milk, the only food the cubs have known since they were born, deaf and blind beneath the snow some two months ag

英语听力：2012-01-25 从南极到北极 From Pole To Pole—4

Day 10. And the mother has let her cubs a mile from the den. Its time to put them to the test. Theyve grown enormously in confidence, but they dont have their mothers sense of urgency. At last it seems that they are ready for their journey. And they

英语听力：2012-01-29 从南极到北极 From Pole To Pole—6

Midsummer on the tundra and the sun does not set. At these altitudes, the suns rays are glancing and not enough of their energy reaches the ground to enable trees to grow. Youll need to travel five hundred miles south from here before that is possibl

英语听力：2012-02-01 从南极到北极 From Pole To Pole—7

As we travel south, so the suns influence grows stronger. And at 50 degrees of latitude, a radical transformation begins. Summers here are long enough for broadleaf trees to replace conifers. Broadleaves are easier to eat and digest, so now animals c

英语听力：2012-02-05 从南极到北极 From Pole To Pole—9

The advance of the seasons brings constant change. As the suns influence diminishes in the north, so the deciduous forests of America begin to shut down, losing their leaves in preparation for the dark, cold months ahead. One season hands over to ano

英语听力：2012-02-15 从南极到北极 From Pole To Pole—13

The sun beating down on tropical waters powers the weather systems of the globe. Moisture evaporates from the warming ocean and rises to create great storms. The winds generated out at sea sweep inland across the continents. As they travel across the

英语听力：2012-02-03 从南极到北极 From Pole To Pole—8

Deer are frequent casulties of the harsh winter. And these leopards are not above scavenging from a corpse. African leopards could never survive here. But the Russian cats have thick fur to shied them from the cold. There are only 40 Amur leopards le

英语听力：2012-02-24 从南极到北极 From Pole To Pole—17

Their secret is teamwork. Impala are their favourite prey. They start to hunt and the pack splits up. An aerial viewpoint gives a new insight into their strategy. As the dogs approach their prey, they peel off to take up separate positions around the

英语听力：2012-02-26 从南极到北极 From Pole To Pole—18

The dogs know their prey must come out or drown. Now its a waiting game. The rest of the pack are calling. Theyve made a kill in the forest and this is an invitation to join in the meal. The impala is in luck. A pack this size kills once a day and ev

英语听力：2012-02-17 从南极到北极 From Pole To Pole—14

All across southern Africa, all animals are journeying for the same reason. Buffalo join the great track. Nowhere else on Earth are so many animals on the move for the same urgent purpose. They are all heading for the swamps of the Okavango, a vast i

PBS高端访谈:转基因作物引发争议

MEGAN THOMPSON: The Hawaiian island of Kauai is known as the garden isle, luring hundreds of thousands of tourists to its lush northern shores. But fewer make it down to the drier southwest side, home to many native Hawaiians, whove lived here for ge

VOA慢速英语20060920a

HEALTH REPORT - W.H.O. Calls for Indoor Use of DDT to Control MalariaBy Caty Weaver Broadcast: Wednesday, September 20, 2006 This is the VOA Special English Health Report. A specialist in protective c

VOA标准英语2011--Spraying Insecticide Indoors Reduces Spr

Spraying Insecticide Indoors Reduces Spread of Malaria Researchers in West Africa have shown that spraying insecticide indoors can dramatically reduce malaria transmission. Efforts to develop a malaria vaccine have so far been disappointing, so progr

Dallas Continues Spraying in Fight Against West Nile Fever

DALLAS Officials in Dallas, Texas and the surrounding county of the same name are continuing to spray by land and air in an effort to suppress mosquitoes that spread the West Nile virus. Health officials have reported more than 200 cases of fever cau

Debate Rages Over DDT Use in Uganda

As Uganda looks to eliminate malaria, the country is engaged in a debate(辩论会) over the use of chemicals such as DDT in some of the world's most malarial regions. In the district of Apac in northern Uganda, the risk of malaria is higher than any