锯尾副革单棘鲀；锯尾副革鲀；假横带扁背鲀；鞍斑单棘鲀, 副革单棘鲀

侏罗纪搏击俱乐部第3期:玛君龙

This discovery had given paleontologists an opportunity to look inside the skull of this rare dinosaur. 这个发现给了古生物学家们仔细观察这种稀有恐龙颅内情况的机会。 Dr. Lawrence Witmer of Ohio University leads one of the

发表于:2018-12-04 / 阅读(51) / 评论(0)

英语第1级听力-English Level 1

新派英语第四册UNIT5

[00:00.00]Unit 5 Dinosaurs [00:06.48]2.Listen.Read. [00:19.12]Bill:Fossils are boring!I wanted to go to the zoo. [00:25.16]Dean:Bur fossils are how we know about dinosaurs. [00:29.81]They walked the Earth for 150 million years! [00:35.46]Bill:Were an

发表于:2018-12-13 / 阅读(151) / 评论(0)

新派英语第四册

SSS 2008-09-04

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Conditions such as mad cow disease are caused by abnormally shaped proteins, called prions. Prions spread by causing other, normal proteins to misfold

发表于:2018-12-24 / 阅读(35) / 评论(0)

Scientific American(九)月

SSS 2009-03-02

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Its like the molecular version of the Joker and the Riddler teaming up against Batman. Scientists at Yale University have discovered that amyloid beta, a

发表于:2019-01-08 / 阅读(59) / 评论(0)

Scientific American(三)月

美国国家公共电台 NPR Prion Test For Rare, Fatal Brain Disease Helps Families Cope

RACHEL MARTIN, HOST: Scientists have developed a better test for a very rare brain disease. And as NPR's Rae Ellen Bichell reports, this test could lead to new ways to diagnose more common diseases like Parkinson's and Alzheimer's. RAE ELLEN BICHELL,

发表于:2019-01-16 / 阅读(42) / 评论(0)

2017年NPR美国国家公共电台2月

BBC儿童英语-睡前故事 109 Tiny_Rannosaurus_and_Big_Footasaurus

Sorry,thereisnottexttemporarily,Pleasehelptingroomtolookforit! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thankyou！爱探险的朵拉 BBC儿童动画-小猪威比

发表于:2019-01-18 / 阅读(78) / 评论(0)

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