原始地球

The story of how we have systematically observed the heavens begins in the days before recorded time. For primitive man, the sun reigned supreme. Its recurring cycles of light and darkness formed the

发表于:2018-11-28 / 阅读(341) / 评论(0) 分类 疯狂英语2001年

Section A [00:02.90]1. M: We've got 34 on the list so far [00:08.75]but I'm sure it'll be up in the forties before we finish. [00:13.90]W: Well,in that case a sit-down dinner is out of the question. [00:19.15]It'll have to be a buffet. [00:22.80]Q: W

发表于:2018-12-01 / 阅读(347) / 评论(0) 分类 决胜六级英语听力

September Equinox 秋分 We have an equinox because an imaginary plane extending outward from Earth's equator isn't the same as the plane of Earth's orbit around the sun. Learn more about today's equinox -- on Earth and Sky.. JB: This is Earth and Sky

发表于:2018-12-07 / 阅读(291) / 评论(0) 分类 (科普英语)Earth and Sky

美国航天局倾力寻找生命之星 For decades, looking for life elsewhere in the universe meant listening for signals that could be from distant civilizations. But recent breakthroughs in space technology refocused some of that effort toward fi

发表于:2018-12-19 / 阅读(277) / 评论(0) 分类 VOA双语新闻 2014年7月

Fossils found at Weng'an in Guizhou Province are regarded as the oldest ones to be found in the country, if not the world. Recently, a group of paleontologists gathered at the site to call for more protection of animal fossils that could provide clue

发表于:2018-12-19 / 阅读(197) / 评论(0) 分类 2017CRI中国国际广播电台

Section (B)Changes in the Balance of NaturePerceptions are relative. A single tree may seem large compared to a person. If you compare it to a mountain, however, thelarge tree seems small. In other words, things in nature are large or small, new or o

发表于:2018-12-29 / 阅读(202) / 评论(0) 分类 新视野大学英语读写教程(3)

[00:00.00]1.W:Do you have a calculator that you could lend me for a few days? [00:06.11]I just have no idea where mine is. [00:10.27]M:Well,yes,I have one.But actually my sister is using it now. [00:16.33]Q:What do we learn from this conversation? [0

发表于:2018-12-30 / 阅读(228) / 评论(0) 分类 英语四级听力练习集锦

Is There Life on Mars? For most of the 20th century, there has been life on Mars. Or, at least in the minds of the Earthlings, who inhabit its closest planetary neighbor. When at the end of the 19th century, the American astronomer Percival Lowell th

发表于:2018-12-30 / 阅读(196) / 评论(0) 分类 英语流行话题阅读:语境识词4500

Long before the land grew roads and towns, long before the first Westerners arrived, long before humans here even had a word for art, the rock artists of Australia were drawing the Dreamtime. The Dreamtime for the aboriginal people is their story of

发表于:2018-12-30 / 阅读(326) / 评论(0) 分类 国家地理2008年

Xishuangbanna is the southernmost prefecture of Yunnan Province. The prefecture is nicknamed Aerial Garden for its luxuriant and multi-layered primitive woods and tropical rain forests, which are teeming with animals and plants. Renowned as a huge na

发表于:2019-01-08 / 阅读(224) / 评论(0) 分类 旅游英语

1.The Bushmen are _______ hunters even though their weapons are primitive. A.favourite B.original C.sufficient D.expert 2.Before he left the White House, the president made a _______ speech. A. quarrel B.symbol C.automobile D.farewell 3.The local gov

发表于:2019-01-08 / 阅读(228) / 评论(0) 分类 大学四六级阅读

NASA Focuses on Earth-Like Planets 美国国家航空航天局寻找类地行星 For decades, looking for life elsewhere in the universe meant listening for signals that could be from distant civilizations. But recent breakthroughs in space technolog

发表于:2019-01-14 / 阅读(186) / 评论(0) 分类 VOA标准英语2014年(七月)

Long before the land grew roads and towns, long before the first Westerners arrived, long before humans here even had a word for art, the rock artists of Australia were drawing the Dreamtime. The Dreamtime for the aboriginal people is their story of

发表于:2019-01-22 / 阅读(201) / 评论(0) 分类 自然百科2008年

It's clear from the fact that the Martian crust is strongly magnetized, that there must have been a magnetic field on Mars in the past, that the only way we know to magnetize rocks is for them to form in the presence of magnetic field. Why did Mars l

发表于:2019-01-22 / 阅读(226) / 评论(0) 分类 自然百科2011年

Time is running out for my friend. While we are sitting at lunch she casually mentions she and her husband are thinking of starting a family. We're taking a survey,she says, half-joking. Do you think I should have a baby? It will change your life, I

发表于:2019-02-04 / 阅读(266) / 评论(0) 分类 阅读空间

如果嫌要发短信的内容长,不方便交流,费时费力,你建议对方打电话,可以说Let's go primitive。primitive的意思是原始的,go primitive就是采用原始的方式,显然电话比短信出现的早,相比之下就

发表于:2019-02-09 / 阅读(217) / 评论(0) 分类 美国俚语

We might not be alone in the universe. Actually, it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets. Estimates of places that can sustain life have been based on the likelihood of them havi

发表于:2019-02-13 / 阅读(170) / 评论(0) 分类 英语听力精选进阶版

As one leading biology text puts it, with perhaps just a tiny hint of discomfort, 正如一篇重要的生物学文章所说,说得也许有点儿令人不大舒服: Researchers agree that such reactions would not have been energetically favorabl

发表于:2019-02-17 / 阅读(191) / 评论(0) 分类 万物简史

WASHINGTON, Dec. 22 (Xinhua) -- The journal Science on Thursday chose the HPTN 052 clinical trial, an international HIV prevention trial as the 2011 Breakthrough of the Year. The study found that if HIV-infected heterosexual individuals begin taking

发表于:2019-02-18 / 阅读(246) / 评论(0) 分类 英语新闻

No Gym. No Problem Maybe its too expensive. Maybe youre too shy. Some people just plain do not like the gym. It can be boring, intimidating, and it can seem somewhat redundant. The good news is theres another way. Sports! Here well take a look at wha

发表于:2019-02-18 / 阅读(219) / 评论(0) 分类 阅读空间
学英语单词
absorption refrigerating machine
alice in wonderland
amount of lap
ancillary measurement
antithyroid substance
araway
asphalt-mica insulation
autoregressive process
biaxial elastic deformation
bionts
bioteches
Blackawton
blarmed
bowshot
Brabender torque rheometer
brown snow
calendars
categorical grants
character font
circumoral crown
communist-led
converging current
croix
cruda
cubic chart
date wheel shaft
dicily
discomforts
divisional nursing
electromagnetic interference(eml)
elephantiasis genitalis
evidentiary hearing
external interrupt
fall short (of)
favorable balance of payment
femoro-abdominal reflex
fifinella
general exemption
glass delay line
graphical smileys
grass stagger
gumnosis
Hann.
high yield pulp
hoofpick
hydrogen-oxygen cell
illicium rhodantha hance
illiquated
inclinable magnetic chuck
inferior mesenteric plexus
interambulacral area
internal return
Isupren
joined forces
kennecotts
least effective dose
least squared error fitting
lenticular regeneration
Madeira
Maillard's coefficient
make addressable instruction
methylene blue method
migration agent
mixed coniferous broad leaved forest
monkey-eatings
MPD generator duct
nonconsumption expenditure
nuclide reagent
overjudge
particle horizon
poiology
presses hydraulic
Ranova
reductional cell division
roll surface condition
rotary vacuum filtration
roundeds-off
self-enclosed
shitbowls
slip
smoothing trowel
sodium uranospinite
space nuclear power
splasht
St-Cyprien
starred basin
stereotypemetal
structural phase transformation
subxiphoid
super bowls
superbreaks
Tapoa, Prov.de
tax-resistances
teending
tentbed
test problem
two-door car
unique continuation
ventilating shaft
viedo frequency
wireless provider
Z disc matrix