渐进遗传

Controling Cancer There are two main causes of cancer: heredity and environment. We can do nothing to change our heredity, that is, the basic physical characteristics that are passed on to us by our parents. However, we can do a great deal to control

发表于:2018-12-01 / 阅读(116) / 评论(0) 分类 大学英语六级听力短文

DAVID GREENE, HOST: Here's a trend. Far more Democrats are describing themselves as progressive these days than they did four years ago. There are strategic reasons candidates are embracing this label. But one major reason, as NPR's Asma Khalid repor

发表于:2018-12-18 / 阅读(43) / 评论(0) 分类 2018年NPR美国国家公共电台10月

Controling Cancer There are two main causes of cancer: heredity and environment. We can do nothing to change our heredity, that is, the basic physical characteristics that arepassed on to us by our parents. However, we can do a great deal to control

发表于:2018-12-30 / 阅读(31) / 评论(0) 分类 英语六级听力练习集锦

Editor's note: See An Introduction to Verb Tenses for the first story in this series. For VOA Learning English, this is Everyday Grammar. This is the last in our four-part series on verb tenses. Make sure you see our episodes on progressive and perfe

发表于:2019-01-02 / 阅读(59) / 评论(0) 分类 2017年VOA慢速英语(一)月

The Perfect Progressive Tenses Editor's note: See An Introduction to Verb Tenses for the first story in this series. For VOA Learning English, this is Everyday Grammar. This is the last in our four-part series on verb tenses. Make sure you see our ep

发表于:2019-01-12 / 阅读(122) / 评论(0) 分类 2016年VOA慢速英语(一)月

Are You Progressing with Progressive Tenses? Editors note: This is the second of a four-part series on verb tenses. Click here to see part one. For VOA Learning English, this is Everyday Grammar. Today we are going to look at the progressive verb ten

发表于:2019-01-12 / 阅读(73) / 评论(0) 分类 2016年VOA慢速英语(一)月
学英语单词
Abragao
adenoids
Alficetin
bagni
balance handle
be lost to history
black catechu
blanket-hemming machine
Carsonism
centrifugal refrigerating machine driven by freon turbine
closed-heart surgeries
continuous simulation
costusroot
default free securities
diagnostic immunology
Dibunophyllum
digital audio disc
dissipation layer
electrolyzing
face of value
family dinner
fat-finger
freshen a rope
gave back
Gentiana tianschanica
germania bearing alloy
get in sb.'s hair
go to the opposite extreme
gracillimum
gun for surface fire
gypseous scale
hartini
hexahelicene
high-power station
hydro-indication
hypertonias
impassiveness
impulse law
intact family
interclass correlation
interlobitis
International Maritime Satellite-M System
juise
lobed rotor motor
loglinear analysis
loop(looped)bar
master governor
meningic
metalized ceramics
metastable (electronic) state
micro flowchart
micrococcus carneus
modified silumin
monogyne
monovariant
motorcycle speedometer
mould and die copying machine
mud-water separator
nankotaizanensis
non-linear channel
nonlinear generator
o-hydrobenzoic acid
occasionably
on fly
One-way operation.
organization of labor
over-correction factor
pastaless
pecado
persuasive communication
picquerer
pig parlor
pin-drop
polluting strength,polluting intensity
potato ring rot
private packet-switching network
proof checker
radial grating
re-encoding
ready to mount
recuperability
reform tub
resistance psychrometer
rice market
rosaceaes
secured claim
Segerstad
self-determinist
single crystalline silicon layer
spanaway
subculturing
swash-man
teacher transfer among schools
three states of matter
Trigenolline
triplane target
typicalities
walks-on
water-moderated reactor
welfare function
zymome