[网络] 六甲基二硅氮烷；六甲基二矽氮烷；六甲基二硅胺烷

VOA慢速英语2011--Experts Link East Africa Drought to La N

Agriculture Report - Experts Link East Africa Drought to La Ni?a in the Pacific 农业报道 - 专家认为东非干旱与拉尼娜现象有关 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 East

发表于:2018-12-16 / 阅读(35) / 评论(0)

2011年VOA慢速英语(八)月

SSS 2011-06-22

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(64) / 评论(0)

Scientific American(六)月

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发表于:2019-01-06 / 阅读(88) / 评论(0)

农业与发展

VOA标准英语2010年-Challenges Lie Ahead for new Somalilan

Somaliland's incoming President Ahmed Mohamed 'Silyano' Mohamoud, center, and Vice President Abdirahman Abdallahi Ismai, right, after President Mohamoud was sworn in as Somaliland's fourth president, 27 Jul 2010 Ahmed Mohamed Silaanyo was sworn in Mo

发表于:2019-01-07 / 阅读(38) / 评论(0)

VOA标准英语2010年(七)月

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Science and Technology Epigenetics and stress Baby blues 科技外因遗传与压力新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(58) / 评论(0)

经济学人科技系列

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During the last week, three major murder trials came to an end. The first one to end, last Wednesday, was a trial of an immigrant from Zimbabwe, George Gwase, for the murder of his niece, 10-year old Charlene, in Christchurch. He was found Not Guilty

发表于:2019-01-27 / 阅读(43) / 评论(0)

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