人口过剩,繁殖过剩

This is scientific American's science 60 second science, I am steve mosbyA lot of people have had compacted third molars. Third molars produce chronic pain. Allen man, a Princeton University Physical anthopolegist, the annual meeting of the immagrate

发表于:2018-12-24 / 阅读(37) / 评论(0) 分类 Scientific American(二)月

Egg Cells 卵细胞 Do you know what an egg cell is? 你知道什么是卵细胞吗? An egg cell is necessary for reproduction. 卵细胞是繁殖的必要条件。 Animals have egg cells. 动物有卵细胞。 Then does every animal have egg cells

发表于:2019-01-10 / 阅读(51) / 评论(0) 分类 与美国小学生一起学英文第10册

VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. On our program this week, we will tell about an animal that can reproduce without mating. We also will tell about a Swedish man who d

发表于:2019-01-11 / 阅读(92) / 评论(0) 分类 VOA慢速英语2007年(六)月

ISPs 网络服务提供者 CTR click through rate 点击率 hack tools/ cheating program 私服,外挂 SAM 软件资产管理 OD plants 光盘生产厂 OD exemplars 光盘模板 OD testing 光盘鉴定 collective management 集体管理 performing

发表于:2019-01-17 / 阅读(39) / 评论(0) 分类 英文语法词汇

本期真题 1. Nancy is only a sort of ______ of her husband's opinion and has no ideas of her own. A) sample B) reproduction C) shadow D) echo 2. Now that spring is here, you can ______ these fur co

发表于:2019-02-01 / 阅读(36) / 评论(0) 分类 英文语法词汇

Although snails can and do successfully mate without stabbing each other, studies have shown that darted snails store one-hundred-sixteen percent more sperm than undarted snails.

发表于:2019-03-06 / 阅读(88) / 评论(0) 分类 英语时差8,16
学英语单词
Agrimopho
alcoholaemias
amyotrophic paralysis
ankryin
aromaticks
atom-bound electron
automatic fuel shut off
Baali
balance room
bare particle
be as good as your word
bluegills
Brachymegalodactyly
bulot
Bupleurum wenchuanense
cang
cathode layer arc technique
Centurion Bank
cham-pagne
clinging cavity
cold water injection
color additives
combat drought
compared with last month
compressional basin
cultivated phytocoenosis
curved vortex sheet
deele
dimyrcene
directory
double-dabble
drinking glass
drip-saver
drug response
electric smoke precipitation
electronic board
emetophobic
energy height
epsoms
exopathic
extendible landing gear
external applied load
fish plate pass
flat gain control
foundry sand preparation plant
growing chickens
guide pins
heavenly host
high-speed gear
hints
hippocamelus antisensis
homolanthionine
ikere
inorganic soil
instruction menu
insurance against all risks
intrinsic parity
John Sigismund
jump smooth
kukuruku
laissez-passers
low-alloy steel wire
lubricating substance
machine for drilling rails
man of men
maranda
Maryknollers
minor speed
national film board of canada
need not
neoalliogenin
nepotian
non compensatory
one-dimensional order
optic fiber streamer
Ozites
paper-bag
past recollection
perivsscular plexus
political background
polymetallic nodule
positive-ion current
pouges
preparation for starting
pulmonary(o)edema
quality of control requirement
razant
roste
route signalling
Sauromatum venosum
single-phase current
smurf
stock price studies
temperature retrieval
teperman
trinucleotid
turn-about-face
vacuum side of blade
Veronica sutchuenensis
walney
Werner Heisenberg
Wood-pipe