na. 几何级数
[网络] 几何级数增加;数列与级数;等比级数

图片 by Jason Marshall Its not often someone suggests that knowing some math could make you the life of the party, but thats exactly what Im going to do. Yes, a properly timed delivery of a few fun facts about the famed Fibonacci sequence just migh

发表于:2018-12-07 / 阅读(417) / 评论(0) 分类 数学英语

托福阅读的考察特点是比较明显的,虽然其选文都是科普文或者其他学术性文章,但是却不考察学术概念本身,而将考察重点落脚在常见词汇以及常见表达上。有很多考生对于这一特点并不熟

发表于:2018-12-19 / 阅读(371) / 评论(0) 分类 新托福写作真题解析

by Jason Marshall In the last article, we began talking about mathematical sequencesin particular, a type of sequence known as an arithmetic sequence. Today, were going to turn our attention to another type of sequence called a geometric sequence. In

发表于:2019-01-02 / 阅读(413) / 评论(0) 分类 数学英语

By Zulima Palacio Santa Fe, New Mexico 27 August 2007 The western U.S. state of New Mexico has 19 Pueblo tribal communities, some of them among the oldest American Indian settlements in the United States. Many of them are well known for their pottery

发表于:2019-01-13 / 阅读(426) / 评论(0) 分类 2007年VOA标准英语(八月)
学英语单词
a-noon
ajala
amyeloneuria
an ABC
anhydroquartimycin
associated virus
averaging operator
Bad Friedrichshall
balanitoside
Bangioideae
bare-rooteds
beauteousness
benflumetol
blennorrh(o)ea
body scanning
bottle packing paper
card reproducer
carrier-current communication
celestial chart
chain slide
cheapy
choriocarcinoma of parametrium
coil inductance
concave plane
concrete drain tile
constant-amplitude test
covered tea pot ladle
double plea
drawin'
drawknot
duplicate procedure name
effect of rudder
elasticity of nonisotropic body
eskers
exceptional point
frequent hoeing
genus Pipturus
geocoded
girasole(girasol)
good terms
Green theorem
Grosser Aletschgletscher
hamular process
hard-fighting
Harts Range
helical cutting
hydrogen tetrasulfide
inducing winding
internal tax laws
irreversible steering gear
irus macrophyllus
jibbooms
kaffir bread
lipoiodine
Little Gap
lose the zone of virgins
lotline
Lupinus texensis
magnetometer
Malaysian Sign Language
man overboard light
MDE (magnetic decision element)
monopodia
morway
non-boiling reactor
non-holonomic
official site
orleanists
pace up and down
Palinuro
paraterminal bodies
pigmy talinum
pinoquercetin
prefocus base
pump inlet
push the heater
quasi-compact space
quebracho-catechin
reasoning about action
reproductive wastage
rosindone
round side mouth tongs
semistrong force
slice microcomputer
slotless
soporus
space wind coil
stave church
subdented
switch fabric
synchro measure
taragin
Thevetoside
Tiffany, Louis Comfort
tight filling
Transformer Rectifiers
triggered gaps
two-sided vector space
unsarcastic
variable-diameter number of hole
Voiteur
whylse