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SSS 2008-04-24

时间:2010-05-13 07:12来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science, I'm Cynthia Graber. This will just take a minute.

Considering getting pregnant and want to influence whether you have a boy or a girl? According to new research published in the Proceedings1 of the Royal Society, you might wanna check out your diet. Scientists at  the Universities of Exeter and Oxford2 in England followed 750 first time pregnant women. The women were asked about their eating habits before and during pregnancy3. They were split into three groups, based on the sheer number of calories consumed and the healthfulness of their diets. For the women who consumed more calories and received a wider range of nutrients4, 56% had boys. This group was also the most likely to eat breakfast. Among the women with the lowest caloric intake5, only 45% had boys. The study is the first linking sex determination with diet in humans. Although it's been known in some animals that more calories equals more males. And while those of us in the west have plenty of calories available, in the US and UK, the boy to girl ratio has been slipping, possibly because mothers are on low calorie diets or are skipping breakfast.

 

Thanks for the minute, for Scientific American's 60-Second Science, I'm Cynthia Graber.
 


点击收听单词发音收听单词发音  

1 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
2 Oxford Wmmz0a     
n.牛津(英国城市)
参考例句:
  • At present he has become a Professor of Chemistry at Oxford.他现在已是牛津大学的化学教授了。
  • This is where the road to Oxford joins the road to London.这是去牛津的路与去伦敦的路的汇合处。
3 pregnancy lPwxP     
n.怀孕,怀孕期
参考例句:
  • Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
  • Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。
4 nutrients 6a1e1ed248a3ac49744c39cc962fb607     
n.(食品或化学品)营养物,营养品( nutrient的名词复数 )
参考例句:
  • a lack of essential nutrients 基本营养的缺乏
  • Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》
5 intake 44cyQ     
n.吸入,纳入;进气口,入口
参考例句:
  • Reduce your salt intake.减少盐的摄入量。
  • There was a horrified intake of breath from every child.所有的孩子都害怕地倒抽了一口凉气。
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TAG标签:   SSS  caloric
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