小行星带隙

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

发表于:2018-12-02 / 阅读(156) / 评论(0) 分类 Scientific American(四)月

'Achievement Gap' Closing Slightly for Young Students in U.S. It is no surprise that within many education systems, wealthier students often test better than poorer students. To education experts this is often called the achievement gap. What is a su

发表于:2018-12-12 / 阅读(355) / 评论(0) 分类 2016年VOA慢速英语(十)月

Steve Inskeep : Commentator Baxter Black has his own way of trying to teach young people, though it is not as easy as it used to be. Baxter Black : Yes, Virginia, things have changed. A 20-something couple I know has occasionally sought my counsel.

发表于:2018-12-17 / 阅读(231) / 评论(0) 分类 2009年NPR美国国家公共电台7月

DIALOG 21 laurance--You look happy today! soony--I am happy.I just heard I passed my physics exam laurance--Congratulations!I'm glad somebody's happy. soony--Why?What's the matter? laurance--Oh,I'm ju

发表于:2018-12-26 / 阅读(116) / 评论(0) 分类 英语经典听力对话

[00:04.60]Module9 THE GENERATION GAP [00:09.60]Unit2 I don't know whether my mum [00:13.57]and I can be friends again. [00:17.52]1 Listen and read. [00:21.59]Problem Page Pamela [00:24.84]Letter1 Dear Pamela, [00:29.33]My danghter plays her music ver

发表于:2018-12-29 / 阅读(221) / 评论(0) 分类 外研社新标准初中英语九年级

Jo: Hello, welcome to Real English from BBC Learning English. Im Jo. Sun Chen: Hello. Im Sun Chen. Jo: Today were going to look at words and phrases that you might not find in your dictionary. Sun Chen: 地道英语和大家一起学习现代英式英语中最新出现的

发表于:2019-01-02 / 阅读(187) / 评论(0) 分类 地道英语在线听

今天我们要学的词组是gap。 Gap的意思是缝隙,差距。比如年龄的差距, age gap。贫富差距,the gap between the rich and the poor。收支差距,the gap between revenue and expense。 美国的一项调查结果说,美国

发表于:2019-01-07 / 阅读(141) / 评论(0) 分类 英语每日一词

今天我们要学的词组是gap。 Gap的意思是缝隙,差距。比如年龄的差距, age gap。贫富差距,the gap between the rich and the poor。收支差距,the gap between revenue and expense。 美国的一项调查结果说,美国

发表于:2019-01-07 / 阅读(137) / 评论(0) 分类 英语单词荟萃

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. If we want to learn more about our planet and other planets in the universe, we can get some help from stars that are long dead and gone. Thats what U.

发表于:2019-01-08 / 阅读(145) / 评论(0) 分类 Scientific American(一)月

LOS ANGELES, April 8 (Xinhua) -- NASA's Wide-field Infrared Survey Explorer (WISE) has discovered a rare asteroid that traces out a horseshoe shape relative to Earth, the Jet Propulsion Laboratory (JPL) said on Friday. Unlike most near-Earth asteroid

发表于:2019-01-11 / 阅读(140) / 评论(0) 分类 英语新闻

NASA: Humans Could Visit Asteroid in 2021 These chunks of ancient space rocks hold clues about the formation of the universe, pose threats to our planet, and present new territory for explorers. NASA's proposed asteroid mission is a logical next leap

发表于:2019-01-14 / 阅读(132) / 评论(0) 分类 VOA标准英语2013年(六月)

LOS ANGELES, June 24 (Xinhua) -- Near-Earth asteroid 2011 MD will whip past Earth on June 27, but will not pose any threat, NASA's Jet Propulsion Laboratory (JPL) said on Friday. The asteroid will pass only 12,000 kilometers (7,500 miles) above the E

发表于:2019-01-20 / 阅读(152) / 评论(0) 分类 英语新闻

In his report, Chinese Premier Li Keqiang said at least 10 million rural residents will be lifted out of poverty this year. And the country will lift 70 million people out of poverty by 2020, according to the draft outline of Chinas 13th Five-Year Pl

发表于:2019-02-04 / 阅读(196) / 评论(0) 分类 cctv9英语新闻2016年

BEIJING, Nov. 7 (Xinhuanet) -- A huge asteroid will pass closer to Earth than the moon on Tuesday, but experts say there is no cause for alarm. Asteroid 2005 YU 55 will pass about 300-thousand kilometers from the earth. The giant space rock is about

发表于:2019-02-08 / 阅读(134) / 评论(0) 分类 英语新闻

Once, during the course of a conversation with a colleague who was a woman of color, I happened to refer to her as an African American. Her response left me confused. Don't call me that, she said. I've never been to Africa; I don't know the first thi

发表于:2019-02-08 / 阅读(134) / 评论(0) 分类 阅读空间

BEIJING, June 28 (Xinhuanet) -- A truck-sized asteroid passed over the Atlantic Ocean within 7,500 miles of the Earth on Monday, according to NASA's Jet Propulsion Laboratory. The space rock, called asteroid 2011 MD, is the second space rock to zip e

发表于:2019-02-15 / 阅读(139) / 评论(0) 分类 英语新闻

Around 350,000 newly unemployed people signed up for financial assistance last week in the United States, which is one reason that the jobless rate remains stuck at a relatively high 8.2 percent. Some employers say they would hire more people if they

发表于:2019-02-18 / 阅读(106) / 评论(0) 分类 英语新闻

浙江省第一份社会财富观调查报告近日对外发布,调查显示,80%的受访者认为贫富差距大,50%以上的人判断未来贫富差距还将拉大。社会贫富悬殊状况不容乐观。 请看《中国日报》的报道:

发表于:2019-02-19 / 阅读(119) / 评论(0) 分类 英文语法词汇

NASA has announced that an Asteroid will pass closer to Earth than the TV satellites that surround the planet. NASA says that the celestial visitor has no chance of impacting the Earth and is known as 2012 DA14. A group of amatuer astronomers discove

发表于:2019-02-21 / 阅读(143) / 评论(0) 分类 英闻天下

Meanwhile, a 45-meter wide asteroid has hurtled safely past earth after it came within 27-thousand kilometers, making it the closest known flyby for a rock of its size. The asteroid, named 2012 DA14 came closer to earth than many communication and we

发表于:2019-02-21 / 阅读(135) / 评论(0) 分类 英闻天下
学英语单词
abismo
abnormal attribute
aditio hereditatis
aerohydrodynamic
alligation
almodovar del campo (almodovar)
ammonium bioxalate
arrive on the scene
auroral caps
berendts
Booleans to bits symbol
BRL-2288
capacitor plate
celpovesical ureterotomy
Cistanche salsa
cockade structure
continuously variable delay line
contour feather
dan bau
Dermatophagoides
dividend funds
e-cups
elastoplastic body
electric tensometer (tensimeter)
electricinsulatingtreatment
error amount
esterifying agent
esthesiodic
euphyll
extraordinary remedy
fomon
galvanostatic polarization curve
general regulation
Gentiana nyingchiensis
genus protoaviss
glycol diacetate
hastula caerulescens
helmsman's column
hierarchical control of power system
homing aid
huerthle-cell tumor
img.
indented explosion
input/output queue length
intussusceptional reductor
jervinone
jet net
leather trade
let the buyer beware principle
light-current relay
manipulate
methasulfocarb
metuliform
microsieve
mnrs
More haste, less speed.
mothproofing gent
moving block system
mycotic corneal ulcer
Neukomm's tests
oblique parallel
offset mortgage
open-work
partial cavitation
PDLC
pencil of circles
pentafluoropyridines
pick something out of a hat
primitive layer
Principle of diversification
progesterone
Rapala arata
reverse stroke
roadside apparatus
Rubia dolichophylla
seaworthiness
secondary abscess
self-propelled vessel
Shafer, L.
short beam
single-roll feed
small data
spurging
stand to win
steel stair
surface pan
tawils
tetrazane
threshold of stress intensity factor
tigershark
torran
transmission-line of information
travel switch
tree performance
twistability
tybalt
uniaperturate
valve flow performance
VAXcluster
viscometric function
weld tracker