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(410) / 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(425) / 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(374) / 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(363) / 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(270) / 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(260) / 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(309) / 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(273) / 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(409) / 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(296) / 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(293) / 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(257) / 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(281) / 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(297) / 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(362) / 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(289) / 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(235) / 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(247) / 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(328) / 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(289) / 评论(0) 分类 阅读空间
学英语单词
active member
advance pack
ADVANCEDMAGNETICS
air-tillery
alphanumeric field
alternatingly
Anders Celsius
annual compressor utilisation period
bastirma
battered slope
being restrained
bemoist
casing shell
ciaccio
command-control program
culminates
dent remover
detrends
Difference check
direct-injection carburetor
disto-pulpo-lingual
Dominion of Canada
douars
elementary electric charge
femund (femunden)
ferrotemp pyrometer
fixed-beam
flame-throwing
fouling up
Fuyang pulse
glass batch
Glenluce
gum sth up
GVL
haloritids
headship
heatsealing
highest-priority
in compliance with
investor group
Kashona
laser gyro axis
legal utilitarianism
locust bark
low-value stock
lubricating water
machine-hour standards
Maiantherum
maintenance expenditure
manning levels
marine ozonizer
metastable memory element
method of comparing coefficients
milled rubber
momentum density
mountain guide
multiple power series
natural ventilation pressure
nearshoring
nolting
nvg
Oates, Joyce Carol
old high germen
pad character
pamabrom
percussion-welding machine
planetary physics
priced in terms of
progenital
pulse widescope
radio communication transmitter
rational application of fertilizer
red-letter days
refer to something
relieved zone
roareth
rubber roll husker
Rutoma
scantier
six foot
snerk
Social Credit Party
solution selling
spur gall
sq yd
steelengraving
strikeout
strussa pellets
surgical suture needle
thin wrapper
tipping moment
to experiment
ultrasonic resonance absorption
unmalted grain
Vena emissaria mastoidea
Venturi blower
vice directors
wastepipes
wcuk
wheyte
X-ray hardness
yard switching