自稔性,自花结实性

Medieval Christmas was a weird mixture of Christianity and Pagan customs. Along with the boar's head no Christmas feast was complete without the giant Yule Log. If you've ever enjoyed a slice of choco

发表于:2018-12-07 / 阅读(78) / 评论(0) 分类 圣诞特辑

The full moon triggers a frenzy of activity. 满月会引发一连串狂乱的事件 It is the time of the highest tides. 海水在此时达到满潮 And in the oceans the full moon's bright light 在海中,满月明亮的胧光 is a mating call fo

发表于:2018-12-07 / 阅读(84) / 评论(0) 分类 2013年VOA慢速英语(三)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? There have been tremendous declines in fertility. The key has been the prevention of unwanted births, really around the globe. John Casterline directs the Initiative in

发表于:2018-12-24 / 阅读(65) / 评论(0) 分类 Scientific American(二)月

'Fertility treatment is seen as low-hanging fruit' SATURDAY Fertility Fairness campaign group said fertility treatment is seen as low-hanging fruit.

发表于:2018-12-29 / 阅读(90) / 评论(0) 分类 英语听力精选进阶版

Twins by Richard Sidaway What do the singer Alanis Morissette, the supermodel Gisele Bundchen and the ex-Secretary General of the United Nations Kofi Annan all have in common? The answer is, they all have a brother or sister who was born on the same

发表于:2019-01-02 / 阅读(197) / 评论(0) 分类 英语音频杂志

This is Scientific American's 60-second Science. I'm Cynthia Graber. This will just take a minute. Guys, heres another reason to eat your veggies: they might be good for your sperm. Some studies show that male fertility and whats called seminal quali

发表于:2019-01-08 / 阅读(109) / 评论(0) 分类 Scientific American(六)月

4.人口红利 Demographic dividend 全国人大常委会委员、中国社科院学部委员、人口与劳动经济研究所所长蔡昉表示,中国人口红利消失的拐点已在2012年出现,将对经济增长产生显著影响,我们应当

发表于:2019-01-08 / 阅读(68) / 评论(0) 分类 英语笔译

The Easter bunny has arrived, chocolate Easter eggs are in the shops, the daffodils are out, and the weather is getting better! Easter is a great time of year, but what are its origins? Originally Easter was called Pascha after the Hebrew word for Pa

发表于:2019-01-08 / 阅读(261) / 评论(0) 分类 英美文化

This is the VOA Special English Agriculture Report. Sorghum farmers in eastern Uganda, working with scientists, have tested some lower-cost ways to improve their soil. Little rain and poor soil fertility are problems in that area, as in other parts

发表于:2019-01-11 / 阅读(91) / 评论(0) 分类 VOA慢速英语2007年(六)月

Approximately 6.6 billion people populate the earth today, with an estimated 3.7 billion living in Asia. But over the past 50 years, economic and social modernization in the region has been accompanied by a remarkable drop in birth rates. Sociologist

发表于:2019-01-14 / 阅读(92) / 评论(0) 分类 VOA标准英语2011年(一月)

Schools in north China's Shanxi Province have been banned from organizing overseas study tours for profit after a plane crash killed two Chinese girls in San Francisco. The provincial education department announced the ban in a statement issued on Tu

发表于:2019-01-19 / 阅读(70) / 评论(0) 分类 世界各地新闻集锦

专家预测:2050年地球将面目全非 The earth's population could top nine billion by 2050, leading to an 'unrecognisable' world as people compete for scarcer resources a U.S. science conference heard yesterday. 有美国科学家警告,到205

发表于:2019-01-26 / 阅读(62) / 评论(0) 分类 实用英语

China's family planning 中国计划生育政策 Illegal children will be confiscated 违法生育就没收孩子 The one-child policy is not just a human-rights abomination; it has also worsened a demographic problem 独生子女政策不仅在人权方

发表于:2019-01-26 / 阅读(74) / 评论(0) 分类 经济学人综合

China's population中国人口 The most surprising demographic crisis出乎意料的人口危机 A new census raises questions about the future of Chinas one-child policy 新的人口普查结果对中国独生子女政策的未来提出了质疑 DOE

发表于:2019-01-26 / 阅读(121) / 评论(0) 分类 经济学人综合

Wilbur crouched low, with his thin, curly tail toward the rat. 威尔伯蹲低身子,让它那条细细的弯尾巴对着老鼠。 Templeton seized the string, passed it around the end of the pig's tail, and tied two half hitches. 坦普尔顿抓住绳

发表于:2019-01-29 / 阅读(87) / 评论(0) 分类 夏洛的网

Wilbur burst into tears. 威尔伯哇哇大哭。 I don't want to die, he moaned. 我不要死,它呻吟说, I want to stay alive, right here in my comfortable manure pile with all my friends. 我要活,我要活在这舒服的肥料堆上,和我

发表于:2019-01-29 / 阅读(57) / 评论(0) 分类 夏洛的网

Guys, heres another reason to eat your veggies: they might be good for your sperm. Some studies show that male fertility and whats called seminal quality have declined over the last few decades. So researchers from two fertility clinics in Spain loo

发表于:2019-01-30 / 阅读(112) / 评论(0) 分类 60秒科学

According to the Washington Post of September 26, Japan's government has been paying more attention to the nations fertility rate, which influences the country's economic development。 The coastal region of Fukui has Japan's biggest share of dual-in

发表于:2019-02-18 / 阅读(79) / 评论(0) 分类 阅读空间

Egg The star of Easterpainted, dyed, gilded in silver and gold, blown empty and hung on trees--is the egg. Legends abound about this symbol of life. Around the world they are brought to church, given as gifts, hidden for the benefit of children and e

发表于:2019-02-19 / 阅读(81) / 评论(0) 分类 雅思英语

新托福口语的阅读材料不长,但题材广泛,而考生的知识又受限于自己所学的专业,不可能面面俱到。这样,当遇到材料的内容非常陌生时,尽管表面上看没有生词,也难免会出现读不懂的现

发表于:2019-03-13 / 阅读(155) / 评论(0) 分类 托福英语
学英语单词
08018
a good idea
acet extract
Adapress
air-flow wattmeter
Alkaios
all electronic watch
areal division of labour
arge flavicollis
arsenic apparatus
autoepizootic
autologous tumor vaccine
Behcet's disease
Bengkalis, Pulau
bouldery ore
buffoon (england)
calcex
carriage of irradiated nuclear fuel
Castro
chronometer room
ciba cake
collacott
commencement of fuel supply
commutativeness
computation program
concave
corporation profit tax
cryovolcanic
data file class
dendroxine
derivationist
deverbally
Diosd
escobita
esso education fundation
fling out
fluid exchange
fluoresceine sodium
footloosest
free exchange rate system
gasoline lead additive
generalized algorithm
geochemical analysis
geological phenomenon
gunks
half-notes
hereditary cerebrospinal paralysis
in the case of
increment list
indium(iii) oxide
intercostal muscle
job lot control
kaneboes
lepiotaceaes
lignifying
longitudinal fibers
lower bed
Luyamba
Marc Chagall
mepenzolate bromide
merit roll
message strategy
migration control center
muscarinergic
mycoflorae
narcosis
nonconforming load
nonepistemological
nonreplicated
oil extraction by pressing
optimum least squares line
pH transducer
phone plugs
photographic star catalog
Pola de Laviana
policepeople
proxy votes
put in order
quantity rebate
ragweed dermatitis
rotormeter
scallywags
scourger
sea traffic
selective capital increase
shazer
stalled
steering track rod
surface temperatur
sweat fever
tax returns
tetanization
text control codes
the farmer
two digit code services
tzannetakis
under-qualified
vaporishness
venne
water resistance of explosive
water-pitressin test
welcome rain