土壤比表面

17 A It is completely flat B It has few rivers C It has many large lakes D It is hilly 18 A The soil has been overworked B The climate is cold C The weather is too dry D The soil is sandy 19 A By rais

发表于:2018-11-29 / 阅读(227) / 评论(0) 分类 【CET12-24备战】四级听力

EXPLORATIONS - Mars Exploration, Part 2 By Paul Thompson Broadcast: Wednesday, February 04, 2004 (THEME) VOICE ONE: This is Shirley Griffith. VOICE TWO: An artists picture of a Mars Rover vehicle. And

发表于:2018-12-01 / 阅读(160) / 评论(0) 分类 Explorations

Hello,everyon [00:06.56]Today,we'll talk about another planet,Mar [00:24.76]Mars is one of the planets in the solar syste [00:40.96]It is the forth planet from the su [00:54.54]It is named for the Roman god of wa [01:09.28]because it appears fairly r

发表于:2018-12-04 / 阅读(188) / 评论(0) 分类 考研英语听力基本功1

No statues, no obelisks, no temples, nothing to suggest this could once have been home to the ancient world's great lost capital. When I came first to this area and to this site, I was shocked. Nothing was to be seen at the surface. No clue where to

发表于:2018-12-05 / 阅读(197) / 评论(0) 分类 遗失的法老城市

Water on the Moon Studies in the journal Science report that instruments on three different spacecraft have found evidence for widespread trace amounts of water on the moon. Karen Hopkin reports For all you space buffs who like to keep track of wher

发表于:2018-12-07 / 阅读(129) / 评论(0) 分类 60秒科学

68 科学家正在绘制洪水预报地形图 ENVIRONMENT REPORT September 14, 2001: Weather Maps For Floods (Start at 1'00

发表于:2018-12-09 / 阅读(82) / 评论(0) 分类 自然探索

For all you space buffs who like to keep track of where the water is, it looks like you can add our very own moon to your list. Because according to a trio of papers appearing in the journal Science, the lunar surface is wetter than we realized. Fort

发表于:2018-12-24 / 阅读(102) / 评论(0) 分类 Scientific American(九)月

W: I think a drought has set in. It hasnt rained a drop for months. M: I think so too, but didn't it rain last month? W: It did rain last month, but the rainfall was only half the monthly average. M: Oh, that bad? W: That's right. It's really bad. I

发表于:2018-12-26 / 阅读(87) / 评论(0) 分类 想聊就聊

Why does Florida have so many springs? Florida sits on a layer of porous limestone which acts as an underground reservoir or aquifer. This aquifer can absorb huge amounts of water. Where the pressure is great enough, springs bubble up, spewing up bil

发表于:2018-12-26 / 阅读(111) / 评论(0) 分类 自然百科2009年

How Rocks Appear In Your Garden I wonder how many of us went out this past spring to get our gardens ready for planting, smug in the thought that last year we got rid of all the rocks. Theres that nice big mound of them in the corner of the garden wh

发表于:2018-12-31 / 阅读(87) / 评论(0) 分类 英语听力文摘 English Digest

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(145) / 评论(0) 分类 VOA2004(上)--各类新闻

AGRICULTURE REPORT - Study Points to Risk in Common Method of Enriching Soil By Jerilyn Watson / Broadcast: Mon, 12 Nov 2007 16:00:00 UTC This is the VOA Special English Agriculture Report. For more than half a century, many farmers worldwide have a

发表于:2019-01-11 / 阅读(128) / 评论(0) 分类 VOA慢速英语2007年(十一)月

AS IT IS 2015-05-25 Americas Famous Front Lawn Gets Overhaul Almost two kilometers of green grass stretch from the front of the U.S. Capitol building to the Washington Monument. Thousands of people walk on it every day. They also play games, have pic

发表于:2019-01-12 / 阅读(105) / 评论(0) 分类 2015年VOA慢速英语(五)月

While it may appear to be a completely chaotic place, 虽然它看上去好像是一个很混乱的地方, when you see it from above, there seems to be a whole grid of waterways and canals connecting each and every home. 但当你从上往下看,那

发表于:2019-01-18 / 阅读(138) / 评论(0) 分类 TED演讲娱乐篇

Recently at a site only two kilomtres to the southeast, archaeologists have unearthed the first traces of people living in the same period. It's a find that may finally answer why stonehenges located where it is. Here is the section through one of th

发表于:2019-01-23 / 阅读(122) / 评论(0) 分类 探索与发现2015年

DEVELOPMENT REPORT - Need to Dig a Well? Start HereBy Gary Garriott Broadcast: Monday, May 15, 2006 This is Shep O'Neal with the VOA Special English Development Report. There are several low-cost ways

发表于:2019-01-30 / 阅读(128) / 评论(0) 分类 2006年慢速英语(五)月

33 阿波罗登月计划(三) DATE=4-25-01 TITLE=EXPLORATIONS #1949 - PROJECT APOLLO, PART 3 TYPE=SPECIAL ENGLISH FEATURE BYLINE=MARILYN RICE CHRISTIANO ANNCR: EXPLORATIONS -- A PROGRAM IN SPECIAL

发表于:2019-01-30 / 阅读(152) / 评论(0) 分类 科技之光

We are rediscovering the enigmas(谜团) of the Moon and they're really in our own backyard Dr Jim Garvin, Nasa Goddard Space Flight Center Moon water has world in a twitter A surprising amount of water has been found to exist in the Moon's soil. Data

发表于:2019-02-18 / 阅读(111) / 评论(0) 分类 英语新闻

I think food is such a great subject, such an interesting subject. I mean, food is something that everyone has to do. It's a life necessity, and actually because of that it can be a real hassle, like when you have to eat when you're hungry but you re

发表于:2019-02-21 / 阅读(92) / 评论(0) 分类 英语趣味课堂

Plants in the Deserts Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts. Close to streambeds, cottonwoods can sometimes be found. Though these st

发表于:2019-02-25 / 阅读(94) / 评论(0) 分类 双语有声阅读
学英语单词
academic calendar
antipurines
balancing
base loading
be disappointed in sb
binge thinking
bivariants
Bramans
bunkankasaponin
Cerasus glandulosa
Cisalpine Gaul
coarse-crush machine
comment symbol
compensated rigid coupling
compression stroke
compression wave
conocerithium atromarginatum
continuous condition
corragated wheel plate
Corylopsis rotundifolia
doughnuts
engine cut-off velocity
faulty correction
FBS data set
flies low
for camber
foran
Freila
geriatria
goal of an organization
greater coasting vessel
haemometer
heat curing
Heepish
hemianesthisia
high frequency probe
imbenignity
imitative synkinesia
industrial pumping
intermediate decay
jargon paraphasia
key stream generator
large amplitude collective motion
leaning on
letalis
lucicutia maxima
marginelloid
meronyms
microstructure effect
modulator and demodulator
monoethanol amine
mother-of-thyme
Ms. I. T.
multi media
multi-stage reaction turbine
non-consumer
nonmarriages
optimization function
over-skirts
parameters
partial epilepsy
particular function
pattern headings
pavesades
picture tube
place learning
prescaling
Pseudosasa hirta
ptar
resolvent of kernel
Rhododendron sinofalconeri
roger's murmur
ruminal surface
sanguinary conflict
Sefīd, Rūdkhāneh-ye
self-polishing copolymer (spc) anti-fouling paint
semirigid polyvinyl chloride sheet
side-levers
Silene waltonii
singye (singae)
snake-bitten
spondias cythera
ST_animal-anatomy_the-breast
suprapterygoidea
tabulated data
terage
Ternopil
the rains
thwacker
Tithonian
tonic accents
topological extension
triquestrum
TSW
upper brake shaft bearing
uppercut
utilization of feed energy by an animal
uv ink
video drama
vlasic planina
Vysotsky
warabisterone