[网络] 胚胎

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发表于:2018-12-18 / 阅读(309) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(243) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(318) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(267) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(257) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(291) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(295) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(308) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2018-12-18 / 阅读(328) / 评论(0) 分类 儿童英文广播剧在线听

By Greg Flakus Houston 02 August 2007 A bridge spanning the Mississippi River in the Midwestern city of Minneapolis collapsed Wednesday, during the evening rush hour, dumping scores of vehicles into the river. At least seven people died and local hos

发表于:2019-01-07 / 阅读(183) / 评论(0) 分类 2007年VOA标准英语(八月)

RACHEL MARTIN, HOST: Scientists doing embryo research are facing some sensitive questions over a new generation of scientific experiments, questions like how long should scientists be allowed to keep human embryos alive in their labs to study them? A

发表于:2019-01-16 / 阅读(133) / 评论(0) 分类 2017年NPR美国国家公共电台3月

ARI SHAPIRO, HOST: For the first time, scientists have altered the DNA in human embryos to make a fundamental discovery about early human development. Scientists say this proves that modifying genes and human embryos can reveal powerful insights into

发表于:2019-01-16 / 阅读(126) / 评论(0) 分类 2017年NPR美国国家公共电台9月

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发表于:2019-01-17 / 阅读(288) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2019-01-17 / 阅读(282) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2019-01-17 / 阅读(288) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2019-01-17 / 阅读(276) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2019-01-17 / 阅读(258) / 评论(0) 分类 儿童英文广播剧在线听

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发表于:2019-01-17 / 阅读(293) / 评论(0) 分类 儿童英文广播剧在线听

By Deborah Tate Washington 17 July 2006 The U.S. Senate Tuesday is expected to approve federal funding for expanded embryonic stem cell research, despite a veto threat from President Bush who opposes the idea on moral grounds. -------- On the eve of

发表于:2019-01-31 / 阅读(212) / 评论(0) 分类 2006年VOA标准英语(七月)

During the weekend, 2 couples and their families invited the media newspapers, TV and radio to interview them about embryo donation. The first couple had two teenage boys and the second couple had a 3-month old baby girl. Couple 1s 16 year old son wa

发表于:2019-02-06 / 阅读(124) / 评论(0) 分类 新西兰英语
学英语单词
allocation point
allowable approximation
ambulatory traction
amylene alcohol
anogrammas
beauty dishes
black cherry aphid
blue greens
buck rabbit
Buckleya henryi
Columbine Valley
crosscutting relationships
disventure
domestic quadrangle index
dowagerism
drawworks shelter
dubitative mood
dull
e-brokerage
ectoparasitisms
effective freezing time
even memory location
exchange settlement certificate for letter of credit
flow reversal
fondue set
fore-sign
forebasin
fruit ice cream
fuel-price
genus Hippoglossoides
give prayers
glass fibre coating
grain spout hook
grease organic filler
hash pipe
height fears
housekeeping bit
hydrochlorinated rubber
induced angle
industrial insurance
insist upon
interstitial diffusion
ivaarite
large intercrossing population
lending policy
licker-in screen
lycoperdon perlatum
manned lunar outpost
medullary sponge kidney
micromorphic continua
movable crank
mud-sand flow
muropeptide
N-nornuciferine
naphthenates
Neotokite
non-destrductive read memory
noncandidacy
nonserious
occipital region
office appliance
payment pattern
personal best
piliis ophidiae
post carrier
prego rolls
primping
pro-governments
Procrustean assignment
quantized interaction
red hard steel
reticulaphis rotifera
Rhapis humilis
rockweed
screw bulb
self-optimizing filters
severing jib
Sibuyan, Mt.
simple one-constituent bed
single vernier
sinoacutinol
sintered hematite
solid wharf
spirtled
subdiaphanous
syker
take-or-pay
takeapart
to call something
torsion-free group
tow worthiness
trust-building
tube failure
ultimate fighter
unbungs
unhealthful
unpuckered
unvizard
ustilago scitaminea
versed
villa cisneros (ad dakhla)
withamites