[网络] 穴果木属

Cloning Humans

05 关于克隆人计划的争论 DATE=2-21-01 TITLE=SCIENCE REPORT - Cloning Humans BYLINE=George Grow (start at 59

发表于:2018-12-07 / 阅读(100) / 评论(0)

科技之光

EXPLORATIONS - National Museum of the American Indian

EXPLORATIONS - July 10, 2002: National Museum of the American Indian By Marilyn Christiano EXP-American Indian Museum (RealAudio) VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember

发表于:2019-01-04 / 阅读(67) / 评论(0)

Explorations

VOA标准英语2012--Global Infertility Rates Generally Hold Steady

Global Infertility Rates Generally Hold Steady The World Health Organization says infertility rates around the world have remained relatively stable since 1990. Almost 50 million couples worldwide were unable to have a child after five years of tryin

发表于:2019-01-14 / 阅读(42) / 评论(0)

VOA标准英语2012年(十二月)

VOA标准英语2013--Human Rights Trial in Guatemala Could Set Global Precedent

Human Rights Trial in Guatemala Could Set Global Precedent Chanting justice, justice, protesters in Guatemala City reacted angrily to the suspension of the trial earlier this month. The protesters, mainly indigenous people, want the 86-year-old forme

发表于:2019-01-14 / 阅读(46) / 评论(0)

VOA标准英语2013年(四月)

Concerns arise over sperm donors

Beijing, Sept. 6 (Xinhua) -- A sperm donation scandal disclosed recently has aroused growing concern in the United States. According to the New York Times' report, Ryan Kramer, the son of a donor, found that he has more than 150 half-siblings - they

发表于:2019-02-04 / 阅读(71) / 评论(0)

英语新闻

Researchers make sperm from stem cell in dish

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(121) / 评论(0)

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a spoon

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achylia gastrica haemorrhagica