单词:oleatricosatriene
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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
HEALTH REPORT - A One-Pill Answer to Treating H.I.V.By Caty Weaver Broadcast: Wednesday, July 26, 2006 This is the VOA Special English Health Report. Atripla The first treatment for H.I.V. in the form
By Melinda Smith Washington, D.C. 14 July 2006 watch Atripla report It is being called the world's first once-a-day treatment for HIV and AIDS, and it promises to make life easier for AIDS patients who have had to take a multitude of pills in the pa
With New Years resolutions the name of the game at the moment, weight loss is most likely on the minds of many. In fact, a YouGov poll taken in December 2014 showed that weight loss was by far the most common resolution, at 35% of all respondents; 20
By Barry Wood Pristina 23 September 2006 At a ceremony Friday in Pristina, Kosovo took another step toward revitalizing the territory's ruined economy. The Banking and Payments Authority of Kosovo (BPK) was transformed Friday into a central bank for
New Initiative Provides Better Treatment for Pediatric AIDS A new initiative has been launched to provide more and better treatment to children infected with HIV. Organizers say pediatric AIDS in developing countries should be considered a neglected
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
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
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
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
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
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
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
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
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
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
By Elizabeth Lee Washington 06 November 2009 Patriarch Bartholomew Patriarch Bartholomew, the spiritual leader of close to 300 million Orthodox Christian around the world, recently visited Washington, D.C. to speak about environmental issues. The Pa
Arthur Ammann discovered that mothers could transmit HIV or AIDS to their babies through the placenta or breast-feeding Jan Sluizer | San Francisco 04 February 2010 California immunologist Arthur Ammann pioneered research that drastically cut the HIV
Psychiatrist 精神病医生 Jerry went to a psychiatrist. Doc, he said, I've got trouble. Every time I get into bed, I think there's somebody under it. I'm going crazy! Just put yourself in my hands for one year, said the shrink. Come to me three ti