标签：larvae 相关文章
This is the VOA Special English Agriculture Report. Recycling programs usually give new life to materials like paper, metal, plastic and glass. But a program in the eastern United States is recycling shellfish to help the Chesapeake Bay. Oysters are
2010年VOA慢速英语(十一)月
Northern Sudan Set to Eliminate River Blindness In 1998, residents of this Nile River town began a community-directed treatment program of ivermectin, a medication that stems the infestation of worms. In 2012, treatment was halted after scientists fo
VOA标准英语2013年(五月)
In the oysters were raised in much the same way as dirt farmers raised tomatoes- by transplanting them. First, farmers selected the oyster bed, cleared the bottom of old shells and other debris, then
新东方背诵文选
Pre-Listening Vocabulary binomial nomenclature: a two-part system for naming species (e.g., Panthera tigris) genus: a subdivision of a family of organisms (e.g., Panthera is the genus for tigers, lions and leopards, and a subdivision of the Felidae f
Facts-事实
Fruit Flies Love Alcohol! 果蝇喜欢酒精！ When human females are pregnant, theyre advised to stay away from alcohol, for fear of harming the fetus. And most parents refrain from giving their infants bottles full of whiskey or beer, for obvious
初学者听力文摘精选
You may think you are gazing upon a sleepy coral reef in the Caribbean Sea, and of course you are. But hiding in plain sight, is a riving teeming hotbed of erotica , that makes a Hollywood hot up party seem like a trip to the dentist. This is a coral
国家地理2007年
This is a fire ant colony in the southeastern United States. Like all ant colonies, it's ruled by a queen and all her workers and warriors are made up completely of female offspring. Unlike other ants, fire ants seem to have almost criminal leaning s
国家地理2007年
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常速英语2013年(九月)
By Brian Padden Irbil, Iraq 23 August 2006 watch Iraq Christians report The news media often focus on the conflict between Shi'ites and Sunni Muslims in Iraq. But there are other ethnic and religious groups under attack. The small Christian communit
2006年VOA标准英语（八月）
In Kenya, a Community Fights Against Malaria As World Malaria Day is observed worldwide April 25, VOA takes a look at Malindi, a city on Kenya's coast that is fighting malaria through community action. As the world works to eliminate malaria deaths b
VOA标准英语2011年(四月)
A baby's cries for food might drive tired parent aggravation,but some species take more drastic measures like the burying beetle,the [xxxxx] which punish it's pesky children by eating them,researches want to get to the bottom of a age-old question in
Scientific American(九)月
The reef was left high and dry, exposed to air and harsh sun. A trillion tiny creatures died in their own homes. For the coral, it was an apocalypse. When the ice age ended, the sea came back and submerged the dead reef. But what brought it back to l
自然百科2011年
Finally, they can rest. For another five months, they will cling to this winter refuge, entering a sort of waking trance of energy conservation. Until the longer days of spring awaken them again to mate and pass along to the young--their migratory im
自然百科2010年
AntIntrigue 蚂蚁的阴谋 Don: Hey,antslives are full of intrigue. Take slave-making ants. They invade other ants nests, kill some of the adults, and then steal the larvae and take them back to their own nests. The larvae learn who they belong to b
英语听力文摘 English Digest
A hornet sting is agony, but for now its distracted, intent on cutting away a piece of grasshopper, small enough to carry back home. Success! The white feather hardly slows the hornet, and more importantly, it can be seen. Now the hunter is the hunte
英语听力：文化博览2008年
John Lapper examines oyster for research by the Louisiana Department of Wildlife and Marine Fisheries and Louisiana State University Until the BP oil spill almost three months ago, the oyster industry in the Gulf of Mexico was the largest in the U.S,
VOA标准英语2010年(七)月
President Bush is in Tanzania where he has announced a new initiative to fight malaria. The program aims to provide insecticide-treated bed nets to every Tanzanian child under five. 美国总统布什在访问坦桑尼亚期间为抗击疟疾宣布了一
VOA双语新闻 2008年2月
Voice 1 Thank you for joining us for todays Spotlight. Im Rebekah Schipper Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 1 Hyaci
环球英语 Spotlight
台湾籍旅美老师今天交给我们的句子是： Water left outside can also start growing algae and host mosquito larvae, which will make you sick and is gross to think about, but not as gross as thinking about the dust inside your house landi
留美老师带你每日说英文
Voice 1 Thank you for joining us for Spotlight. Im Liz Waid. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 1 In February 2007, c
环球英语 Spotlight