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?

Space News

Broadcast: Jan 29, 2003 By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell about a space rock that

VOA慢速英语2018--The Preposition 'By'

If you can write or speak even just a little English, you have surely used prepositions -- words like to, in, on, at and by. A preposition is a word or group of words that shows direction, location or time. Today on Ask a Teacher, we have a question

生活英语对话 Episode 95: A letter from Poland

本单元是关于来自波兰的信件的对话。 Helen: Dear Helen, I've been thinking about you a lot lately. Remembering our good and bad times. You coming into the kitchen and thinking something was going on with me and Alice. That huge fight we had about John

英语语法：148 “Myself”

Grammar Girl here. Today's topic is how to use the word myself. Misusing myself is definitely one of the top things people complain to me about. Here's an example: caller comment The caller is right; people seem to be so afraid to use the words me an

Preparing for a Walk in Space

Broadcast: June 4, 2003 By Paul Thompson VOICE ONE: This is Ray Freeman. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today, we tell about how astronauts prepa

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慢速英语2011--Is NASA’s James Webb Space Telescope a

Technology Report - Is NASAs James Webb Space Telescope a Time Machine? This is the VOA Special English Technology Report. If you could build a time machine, what would it look like? Maybe, it should look like a telescope. American scientists are bui

英语语法：56 How to Use "Myself"

Legal Lad here, filling in again for Grammar Girl. The poor girl is still sick. She asked me to thank everyone who has sent get well messages. She appreciates them a lot. Today's topic is how to use the word myself. Grammar Girl says that how to use

VOA常速英语2007-US Space Shuttle Docks at International Space St

By Alex Villarreal Washington 25 October 2007 The U.S. space shuttle Discovery has docked at the International Space Station, marking the next phase in a complex mission to expand the international orbiter. VOA's Alex Villarreal reports from Washingt

Space junks threaten future mission

BEIJING, Sept. 6 (Xinhuanet) -- The amount of space junks floating in Earth's orbit has reached a critical level, warned scientists. The future space missions may become too dangerous to fly for a risk of colliding with space junks, said a report rel

Russian space forces reconnect with lost satellite

MOSCOW, April 22 (Xinhua) -- The Russian Space Forces has re-established contact with a military satellite, Geo-IK-2, which went missing in February, local media reported Friday. According to a spokesman from the Defense Ministry(国防部) , Interfa

Working in Project Space

Working in Project Space One of the givens in David Allens Getting Things Done is that you cant do a project. Instead, Allen recommends you break projects down into immediate next actions, discrete doable chunks that can be cranked through with a min

Launch to pave way for space station

BEIJING, Sept. 21 (Xinhuanet) -- China will launch an unmanned module next week, paving the way for a planned space station, a spokesman for the space program said on Tuesday. Tiangong-1, or Heavenly Palace 1, will blast off from Jiuquan Satellite La

Space Shuttle Discovery Prepares for its Final

The U.S. space shuttle（航天飞机） Discovery has completed its work at the International Space Station on its 39th and final mission, and is preparing for Wednesday's scheduled landing at the Kennedy Space Center in Florida. The shuttle success

US Space Program Goes Commercial

This Friday, the U.S. space shuttle Endeavor is scheduled to lift off on its last voyage（航行） to the orbiting International Space Station. And on June 28, barring any last minute complications, Alantis will become the last space shuttle ever t

Russian Space Agency names next crew to ISS

MOSCOW, Oct. 24 (Xinhua) -- The Russian Space Agency Roscosmos confirmed on Monday the list of next crew members who will fly to the International Space Station (ISS) on Nov. 14. Russia's Soyuz TMA-22 spacecraft will bring Russian cosmonauts Anton Sh

China sets up management body for orbiting space lab

BEIJING, Nov. 13 (Xinhua) -- China has established an operation committee for management of the country's first space lab module, Tiangong-1, during its two-year orbit of earth. The committee will deal with operations planning, technical appraisal an

China accomplishes first space docking

BEIJING, Nov. 3 (Xinhua) -- Two Chinese spacecraft accomplished the country's first space docking procedure early Thursday, silently coupling in space more than 343 km above Earth's surface. Nearly two days after it was launched, the unmanned spacecr

China sends its first female to space

JIUQUAN, June 16 (Xinhua) -- She is a wife. She belongs to China's one-child generation. On Saturday, 33-year-old Liu Yang becomes the country's first woman entering space. The home-grown Shenzhou-9 spacecraft, atop an upgraded Long March-2F carrier