数学英语 23 What are the Range and Standard Deviation?

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

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

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 2011-10-05

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

VOA标准英语2008年-G8 Agrees to Cut Carbon Emissions by Half

Leaders of the world's advanced economies have committed to a long-term goal of slashing their emissions of carbon blamed for global warming. Officials say the plan is a first step toward building consensus but activist groups and at least one Afric

VOA标准英语2009-US, China May Set Emissions Reduction Goals

During talks in Beijing, U.S. President Barack Obama and Chinese President Hu Jintao endorsed a package of energy projects, including deals on clean coal and electric vehicles. Environmental analysts say the talks offer new hope the two countries wi

VOA标准英语2013--New Ways of Tracking Greenhouse Gas Emissions Developed

New Ways of Tracking Greenhouse Gas Emissions Developed With more than 18 million people living, working and driving in Los Angeles, the city often is covered in a hazy layer of smog. Stan Sander, senior research scientist at the U.S. space agency's

美国国家公共电台 NPR Surf And Turf: To Reduce Gas Emissions From Cows, Scientists Look To The Ocean

ARI SHAPIRO, HOST: Livestock is a major source of greenhouse gases around the world. Scientists have been trying to find ways to reduce emissions from cows, and they think they might have found a solution in the ocean. NPR's Merrit Kennedy explains.

新西兰英语 55 Emissions Trading Scheme

The Emissions Trading Scheme (ETS) could become law later this week or early next week. This scheme is a plan to cut greenhouse gases by making businesses pay for their carbon dioxide emissions, that is the CO2 which they put into the air. There will

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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

新西兰英语 217 Emissions Trading Scheme becomes law

Tonight Parliament voted on New Zealands Emissions Trading Scheme (ETS). The National Party, with the support of the Maori Party, had 63 votes while the Opposition Labour, the Greens and ACT had only 58 votes. Earlier this week, the government gave f

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

新西兰英语 134 Carbon Emissions

The Minister of Climate Change, Nick Smith, gave some strange information about our carbon emissions yesterday. (See September 23rd 2008 for information about the Emissions Trading Scheme.) Last year we put too much carbon into the atmosphere and wou

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.