染色体基数

Alice: Hello, I'm AliceStephen: And I'm Stephen. Alice: And this is 6 Minute English! This week were talking about sleepwalking. Have you ever walked in your sleep, Stephen? Stephen: I dont think so, but Ive been known to tell stories in my sleep. Al

发表于:2018-11-29 / 阅读(312) / 评论(0) 分类 六分钟英语

This is Scientific American's sixty seconds science, I'm Steve Mirsky. Got a minute? The eastern green tree frog looks exactly like the close related cops gree tree frog, the big difference between the two species is beneath the surface. The eastern

发表于:2018-12-02 / 阅读(218) / 评论(0) 分类 Scientific American(十二)月

Little girls are made of sugar and spice and, according to a study published in the journal Cell, a fierce determination to maintain their girlishness. Because it seems that a single gene keeps their ovaries from turning into testes. Scientists have

发表于:2018-12-24 / 阅读(198) / 评论(0) 分类 Scientific American(十二)月

Idiom: Like a moth to a flame ( doing something attractive and dangerous ) Hit the book: Potion Disability Inspire Down syndrome Chromosome

发表于:2018-12-27 / 阅读(223) / 评论(0) 分类 趣味青春英语

梦游症是会遗传的。 Alice: Hello, I'm Alice Stephen: And I'm Stephen. Alice: And this is 6 Minute English! This week were talking about sleepwalking. Have you ever walked in your sleep, Stephen? Stephen: I dont think so, but Ive been known to

发表于:2018-12-27 / 阅读(242) / 评论(0) 分类 一起听英语

World Down Syndrome Day is on March the 21st every year. It is on this day because the number 21 is important in the identification of Down Syndrome. The condition is created by a 21st, extra chromosome being replicated three times, thus causing the

发表于:2018-12-29 / 阅读(292) / 评论(0) 分类 英语课程学习计划和讲义

93 探究长寿基因 SCIENCE REPORT - September 12, 2001: Search for Long Life GeneBy Nancy Steinbach (Start at 1'01

发表于:2019-01-02 / 阅读(192) / 评论(0) 分类 科技之光

Neil: Hello and welcome to Six-Minute English from BBC Learning English, I'm Neil and with me today is Rosie. Rosie: Hi there. Neil: Well, today we're talking about men. Rosie: That sounds interesting. Neil: It is very interesting especially if you'r

发表于:2019-01-07 / 阅读(254) / 评论(0) 分类 六分钟英语

Are you in the holiday spirit yet? Well, let's take you Cross Country, beginning in Pittsburgh, Pennsylvania. You might now. Its pretty. Bob Cox loves to make the holiday light display a pretty big spectacle with 150,000 computer-animated lights. Now

发表于:2019-01-07 / 阅读(220) / 评论(0) 分类 CNN2010年(十二)月

Scientists at the Whitehead Institute in Cambridge, Massachusetts say it's fortunate for humans that the Y chromosome is not on the verge of extinction. That's because the Y is the chromosome that makes males males. The outlook is less favorable for

发表于:2019-01-08 / 阅读(448) / 评论(0) 分类 2005年NPR美国国家公共电台

This is the VOA Special English Health Report. A miscarriage is the natural loss of a pregnancy before the twentieth week. This happens to as many as twenty percent of known pregnancies. Experts say many pregnancies end before a woman even knows she

发表于:2019-01-11 / 阅读(190) / 评论(0) 分类 2010年VOA慢速英语(八)月

Fewer US Students Are Ready for College Fewer high school students in the United States were ready for college in 2015, say recent test results. Only 37 per cent of seniors scored at or above proficiency level in reading. The number of seniors scorin

发表于:2019-01-12 / 阅读(169) / 评论(0) 分类 2016年VOA慢速英语(五)月

Basic Steps Help Protect Personal Information From Hacking U.S. government officials say the surveillance covered only metadata - the patterns of the phone calls and internet messages - not the substance of the communications. According to reports, a

发表于:2019-01-14 / 阅读(180) / 评论(0) 分类 VOA标准英语2013年(六月)

今天Robert的办公室出现了一个生面孔――Kevin Hughes,此人代表美国一家运动产品公司,专程来台湾寻找加工合作。接洽的加工产品市运动型磁质石膏护垫,受伤的运动员包上这种产品上场比赛

发表于:2019-01-26 / 阅读(191) / 评论(0) 分类 天天商务口语

Tick-tock, tick-tock. Is that your biological clock? And if it is, are you female? Most people think biological clocks are strictly female phenomena, with infertility and the risk of certain diseases

发表于:2019-01-26 / 阅读(255) / 评论(0) 分类 阅读空间

Scientists Study Genetic Basis of Autism Scientists have taken another big step toward identifying the genetic flaws which may cause autism, a type of neurological development disorder. In the latest development, laboratory mice have been genetically

发表于:2019-01-31 / 阅读(199) / 评论(0) 分类 VOA标准英语2011年(十月)

By Douglas Bakshian Manila 06 May 2008 A new report says the lives of millions of young children could be saved each year if basic medical care and medicine are made available to the poor. Douglas Bakshian has more from Manila. The report by the U.S.

发表于:2019-02-05 / 阅读(254) / 评论(0) 分类 VOA标准英语2008年(五月)

Dan上回提议前半年给他们二成折扣,后半年再降为一成半,经Robert推翻后,Dan再三表示让步有限。您知道Robert在这折扣缝隙中游走,如何才能摸出双方都同意的数字呢?他从锦囊里又掏出什么

发表于:2019-02-09 / 阅读(194) / 评论(0) 分类 实用英语

Autism 自闭症 Why it's not Rain Woman 为什么它不是雨女 Women have fewer cognitive disorders than men do because their bodies are better at ignoring the mutations which cause them 与男性相比,患有认知障碍的女性较少,因为她

发表于:2019-02-16 / 阅读(185) / 评论(0) 分类 经济学人科技系列

1 Compared with conventional beef, grass-fed beef is higher in this health-promoting nutrient, which gives its fat a yellow color: 1、与传统牛肉相比,草饲牛肉中某种有益健康的营养素含量更高,并让脂肪呈现黄色,这种

发表于:2019-02-18 / 阅读(249) / 评论(0) 分类 阅读空间
学英语单词
accounting activity
air-intake system
algorithmic translation
aluminum beads collector
antimonites
apple vinegar
asteroid group
auluss
autocategorizing
bog marl
bottle-neck
box tap
breach of morality
bulwark brace
Clauberg's unit
clay tile
coarse pitch
combined diesel and gas turbine power plant and carbon gland
converted fabric
cypraea stolida
decadic
desulphurizing
differential association
distribution principle
Divichi
double screw pump
drop an acquaintance with someone
dull plate
electric material
equalizing reservoir
Erysimum hieraciifolium
ffruit
fishing power
fork, tuning
fourth chord
freakin'
genus anguillas
glen canyon dams
Gravelines
growing leys
hectare
Hiram Ulysses Grant
hoazins
Indian nut
interfering application
JV joint venture
keep a person guessing
Labrador retriever
laundryman
lease agreement
long-period reverberation
macaluba
mass/energy relationship
mixture of lower alcohols
nephrorosein
Nietzschean
Niobe Seamount
Noire, R.
non sine wave
nonratified
Pegnitz
periwigged
Peto
photo-communication
photoplotting
plug to-plug adapter
press plunger
prismatic stride level
propeller advance ratio
QuickBuild
rate action controller
reinterview
sabre bill
seed sowing mechanism
semi-metallic packing
serous enteritis
Shaffer stroke function
she've
shunting zone
silk-webbingcathete
sonar data
sour
spectral emission
spritzes
straight knives
swiveling propeller
tea clotch
templatization
Theophanes The Greek
thermal weapon
threeness
transforaminal
Tube-Snout
ultrastructures
unharried
vacancy sink
vapour container
Vesuvian garnet
water fender
win on points
worswick
writeoffs