生殖毒性研究

AILSA CHANG, HOST: Scientists say they have solved a mystery about the Zika virus. They think they've figured out why the virus became a global threat all of a sudden and started causing severe birth defects. As NPR's Michaeleen Doucleff reports, the

发表于:2018-12-02 / 阅读(69) / 评论(0) 分类 2017年NPR美国国家公共电台9月

In the 24 years since the birth of Louise Brown,the world's first test-tube baby,thousands of would-be parents have been assure that as far as scientists knew there was no extra risk of genetic damage associated with in-vitro fertilization,

发表于:2018-12-05 / 阅读(32) / 评论(0) 分类 有声杂志阅读

Study: Protein in Mother's Milk May Prevent HIV Transmission to Infants研究发现母乳中蛋白质能预防艾滋病毒传播 From VOA Learning English, this is the Health Report. 这里是美国之音慢速英语健康报道。 Hundreds of thousa

发表于:2019-01-02 / 阅读(44) / 评论(0) 分类 2013年VOA慢速英语(十一)月

AS IT IS 2015-07-02 Drug-Resistant Tuberculosis Less Likely to Spread 耐药结核病传播的可能性较小 The number of multi-drug-resistant tuberculosis cases is rising. Multi-drug-resistant TB results from a bacterium a group of small living th

发表于:2019-01-12 / 阅读(59) / 评论(0) 分类 2015年VOA慢速英语(七)月

文本: CALLER: Mr. Teal, your help in eradicating those out-of-towners was ___(1)___. I have more work for you with a more 'hands-on' _(2)_. Your next job is taped under the phone.

发表于:2019-01-23 / 阅读(22) / 评论(0) 分类 小龟乐游记英语短文

DEVELOPMENT REPORT – July 1, 2002: Reproductive Health Report 28 Jun 2002, 21:24 UTC This is the VOA Special English Development Report. A new report has been released about sexual and reproductive

发表于:2019-01-30 / 阅读(49) / 评论(0) 分类 农业与发展