SSS 2010-04-29

This is Scientific American's 60-Second Science. I'm Karen Hopkin. Thisll just take a minute. Any school kid can tell you that comets are made of ice. That frozen water burning off is what gives comets their characteristic tails. But asteroids were g

赖世雄学英语第四册 lesson 14

[00:00.00]Lesson 14 Comets [00:02.60]彗星 [00:05.20]In recent scientific investigation of comets has increased [00:14.16]because of a growing interest in the origin of the sun and planets. [00:17.63]近年来，由于对太阳和行星的起源兴趣

TED演讲：气味背后的科学(2)

Now, while the smell wafts over you, let me tell you the history of an idea. 现在，趁着香味还萦绕在你们周围，我来为你们介绍一个想法形成的过程。 Everything that you're smelling in here is made up of atoms that come fro

TED演讲：重新定义字典(9)

So, enough scientists in other disciplines are really asking people to help, and they're doing a good job of it. 足够多的科学家在其它领域正寻求大家帮忙，而且大伙也干的不错。 For instance, there's eBird, where amateur bir

SSS 2008-01-25

This is Scientific Americans' 60-Second Science, I'm Chelsea Wald. Got a minute? Remember the good old days when we understood our solar system? Then we found out Pluto wasn't a planet. And now a new study puts comets in question. The data come from

趣味青春英语电台 第160期:On the rocks

Idiom: On the rocks 事情处于一个相对困难的状态中 Hit the book: Insufficient Insurance Cash flow Jeopardy Periodic Recipient Frankly Installment

VOA慢速英语2018 一万年前的英国人是黑皮肤蓝眼睛

Tests Suggest 10,000-Year-Old Brit Had Dark Skin, Blue Eyes Genetic material from a 10,000-year-old skeleton suggests the oldest-known Briton had dark skin and blue eyes. 根据一具1万年前的骨骼中提取的遗传物质表明，人们所知最古

VOA慢速英语2014 Remember Your Chemistry Classes?

As It Is - Remember Your Chemistry Classes? An international team of researchers recently reported creation of a new element that is 40 percent heavier than lead. The researchers successfully developed what they are calling Element Number 117 at a la

70.Senior Class

During the doctor's periodic visit to my elderly mother, I told him that Mother would be celebrating her 98th birthday in few days. Delighted by the news, he bent down and gave her a kiss for the occa

CNN 2012-03-16

Wanted to slice out little time,we wish everyone a happy pie day on this March 14th.413 Ok.let's go ahead to get today's headlines. Two primaries two caucuses,110 delegates,that's what was the stake yesterday in the race for the Republican presidenti

SSS 2011-10-10

This is Scientific American's 60-Second Science. I'm John Matson. Got a minute? Earth's surface is dominated by oceans. But where did all that water come from? Asteroids and comets smashing into the early Earth have long been thought to be a promisin

SSS 2011-01-10

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? The Apollo moon missions ended almost 40 years ago. But for lunar scientists, they're gifts that keep on giving. Researchers studying rocks brought back by ast

与美国小学生一起学英文第11册 第2期:彗星

Comet 彗星 Do you know what a comet is? 你知道彗星是什么吗？ A comet is an object in the solar system. 彗星是太阳系中的天体。 It travels around the sun like the planets. 它像其它行星一样绕着太阳转。 Then, why don'

VOA慢速英语2013 Sleeping and Dreaming of Comets

Sleeping and Dreaming of Comets From VOA Learning English, this is Science in the News. Im Jim Tedder. And Im Caty Weaver. Today, we tell how sleep helps to keep our brains healthy. We have a report about what South African researchers are calling Ea

小兄弟威胁着地球(2)

[6] One group, led by John Matese, professor of physics at the University of Louisiana at Lafayette, confirms the notion that it is most likely to be a brown dwarf, a star that never accumulated enoug

万物简史 第148期:基本物质(20)

For most of us, the periodic table is a thing of beauty in the abstract, but for chemists it established an immediate orderliness and clarity that can hardly be overstated. Without a doubt, the Periodic Table of the Chemical Elements is the most eleg

这个七夕特别的情书给特别的你

Idea 1: Write a small but romantic love letter (about 5 lines in length or less). Then, get your local newspaper and circle all the words you need (in order) to include in your letter. Then leave the paper with a special note on top telling him to pu

Senior Class

During the doctor's periodic visit to my elderly mother, I told him that Mother would be celebrating her 98th birthday in few days. Delighted by the news, he bent down and gave her a kiss for the occasion. He then announced that he, too, would be cel

专业术语-财务英语词汇P8

period for redemption 赎回期限 period of accrual of interest 应计利息的期间 periodic actuarial investigation 定期精算调查 periodic payment 分期付款；定期付款 periodic updatin

GRE试题一(2)

16. UPBRAlD : REPROACH :: (A) dote : like (B) lal: : stray (C) vex : please (D) earn : desire (E) recast : explain Directions: Each passage in this group is followed by questions based on its content.