SSS 2010-07-01
时间：2019-01-08 作者：英语课 分类：Scientific American(七)月
Over the years, people have put forth 1 a lot of theories to explain why intelligence differs, from person to person and even around the world. Health, wealth, schooling 2, nutrition, and even climate have all come up. Now, researchers at the University of New Mexico suggest that parasites 3 might play a role. They find that the prevalence of infectious diseases can be a powerful predictor of regional smarts. Their work appears in the Proceedings 4 of the Royal Society.
It takes a lot of energy to build and operate a human brain. This needy 5 organ commands 87 percent of the body’s metabolic 6 budget in infants, and about 25 percent in adults. So things that sap our energy are likely to hinder our intellectual growth. That’s why malnourishment’s not good for the mind.
But what about parasites? Fighting off nasty bugs 7 can take a lot out of you. So the scientists got to wondering whether excessive infections might correlate with impaired 8 cognitive 9 development. Looking at IQs from around the world, they found that high levels of infectious disease go hand in hand with lower average national intelligence.
Although the authors have not demonstrated cause-and-effect, it’s nice to think that taking down parasites could bring up our IQs.
Thanks for the minute for Scientific American’s 60-Second Science. I’m Karen Hopkin
- The wind moved the trees gently back and forth.风吹得树轻轻地来回摇晃。
- He gave forth a series of works in rapid succession.他很快连续发表了一系列的作品。
- A child's access to schooling varies greatly from area to area.孩子获得学校教育的机会因地区不同而大相径庭。
- Backward children need a special kind of schooling.天赋差的孩子需要特殊的教育。
- These symptoms may be referable to virus infection rather than parasites. 这些症状也许是由病毒感染引起的，而与寄生虫无关。
- Kangaroos harbor a vast range of parasites. 袋鼠身上有各种各样的寄生虫。
- 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
- Although he was poor,he was quite generous to his needy friends.他虽穷，但对贫苦的朋友很慷慨。
- They awarded scholarships to needy students.他们给贫苦学生颁发奖学金。
- Impressive metabolic alternations have been undergone during embryogenesis.在胚胎发生期间经历了深刻的代谢变化。
- A number of intoxicants are associated with metabolic acidosis.许多毒性物质可引起代谢性酸中毒。
- All programs have bugs and need endless refinement. 所有的程序都有漏洞，都需要不断改进。 来自《简明英汉词典》
- The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
- Much reading has impaired his vision. 大量读书损害了他的视力。 来自《现代汉英综合大词典》
- His hearing is somewhat impaired. 他的听觉已受到一定程度的损害。 来自《现代汉英综合大词典》