单词：odd-toed hoofed mammals
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This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute~ Want to suss out the existence of a shy mammal in a tropical jungle? Just check a bloodsucking leech. Scientists estimate that about a quarter of the w
Scientific American(四)月
It really is rocket scienceresearchers are using huge x-ray scanners from NASA to understand how sonar might be affecting the hearing of large ocean mammals. These scanners are usually used to inspect the space shuttles solid fuel rockets. Navy sonar
Scientific American(十一)月
Some people eat to avoid being bored. Others to avoid doing something theyd rather not, like preparing a podcast. Now a report says we might eat to avoid fungi. Because warm-bloodedness, a condition that requires a lot of calories, may have evolved t
Scientific American(十)月
UNIT 34 NATURE (I) ANIMAL WORLD Lesson 67 Part I UNIT 34 NATURE (I) ANIMAL WORLD Lesson 67 Part I Warming-up Exercises Spot Dictation: Animals Unlike most plants, animals are living ____ that have the
英语听力入门 (全四册)
Incredibly, whales are closely related to hoofed animals, in particular, the pig and the hippo. 很难相信，鲸类跟有蹄类动物的关系非常接近，特别是，猪和河马。 55 million years, the actual evolutionary origins of whales and
侏罗纪搏击俱乐部
谈到视角，很多同学可能会问，当我谈论视角的时候，我在说什么。看以下GRE考试中的一句话： The large number of physiological and behavioral similarities between birds and mammals, which have separate evolutionary h
GRE英语
Conservationists are overestimating the number of species that have been driven to extinction(消失), scientists have said. A study has found that a third of all mammal species declared extinct in the past few centuries have turned up alive and well
英语新闻
This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Climate change affects seasonal eventsspring flowers open earlier, songbirds breed sooner. But what about mammals? A new study documents the effect on a
Scientific American(六)月
Mammals 哺乳动物 What animals can produce milk for their babies? Mammals. 什么动物能为它们的宝宝产奶?哺乳动物。 Dogs, pigs, elephants, lions, dolphins and bats are examples of mammals. 猪，狗，大象，狮子，海豚和蝙蝠
与美国小学生一起学英文第8册
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Barbara Klein. This week, we will tell about mammal populations in danger of disappearing. We will also tell about one kind of animal that disappeared
VOA慢速英语2008年（十一）月
Could Rising Temperatures Mean Smaller Mammals? Scientists say in the ancient past, higher temperatures meant smaller mammals. Theyre studying how a brief, but dramatic climate change event affected body size. Its called the Paleocene-Eocene Thermal
VOA标准英语2012年(二月)
[00:04.83]Lesson 13 [00:08.64]1.Learn to say [00:12.79]I'm going to talk about six types of animals. [00:16.34]我要说一说六种动物. [00:17.67]The first type-mammals.第一种--哺乳动物. [00:21.11]People are mammals.人类就是哺乳动物
闽教版小学英语六年级下
在托福考试中，得阅读者得天下，为此上海新东方小编从词汇，题材，题型，解题方法等几大模块入手，为您精心整理了托福阅读技巧攻略的完整版，以方便广大考生备考。 托福阅读的词汇问
托福英语
托福阅读的词汇问题似乎是大家一向比较有争议的一件事情，有的人认为托福阅读只要四级甚至高中的词汇量就可以搞定，但是有的人觉得单词背得多多益善，还要尽量多背一些专业词汇。其
托福英语
托福阅读的词汇问题似乎是大家一向比较有争议的一件事情，有的人认为托福阅读只要四级甚至高中的词汇量就可以搞定，但是有的人觉得单词背得多多益善，还要尽量多背一些专业词汇。其
托福英语
The giraffe is a native of Africa. 长颈鹿产自非洲， It is of singular shape and size, and bears some resemblance both to the camel and the deer. 是一种外形和尺寸独特的动物，与骆驼和鹿都有相似的特征。 The mouth is sm
美国语文第四册
Lyell's oversights were not inconsiderable. He failed to explain convincingly how mountain ranges were formed and overlooked glaciers as an agent of change. He refused to accept Louis Agassiz's idea of ice agesthe refrigeration of the globe, as he di
万物简史
57 这种动物是人类的祖先吗？ DATE=6-13-01 TITLE=SCIENCE REPORT - Ancestor of Humans BYLINE=Jill Moss (Start at 59
科技之光
? 澄清托福阅读单词问题的两个误区? 托福阅读的词汇问题似乎是大家一向比较有争议的一件事情，有的人认为托福阅读只要四级甚至高中的词汇量就可以搞定，但是有的人觉得单词背得多多益
托福英语
睡眠革命 Evolution of sleep Sleep is very ancient. In the electroencephalographicsense we share it with all the primates and almost allthe other mammals and birds: it may extend back asfar as the reptiles. There is some evidence that the two type
托福英语