英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

SSS 2011-10-13

时间:2011-11-01 08:11来源:互联网 提供网友:gmeng   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (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.

 
A new archaeological find may signify one of the great leaps in human cultural and cognitive1 history. Because researchers have discovered a 100,000-year-old art studio.
 
It was known that ochre—rock with red or yellow pigments—was used for paint even that far back in history. But there was scant2 evidence for how it was prepared and handled.
 
Then, in 2008, researchers uncovered an ochre mixing kit3 in a South African cave. They found two abalone shells, most likely used for paint mixing and storage. They also found ochre, bone, charcoal4, grindstones and hammerstones.
 
The researchers say the ochre was probably rubbed on quartzite slabs5 to create a fine powder. It was then mixed and heated with other crushed substances, including other stones or mammal-bone. Microscopic6 striations on the inner abalone surface are likely scrape marks left during paint mixing. The research was published in the journal Science.
 
The paint may have been used for body adornment7 or long-gone artwork. And the presence of this paint-production laboratory indicates that the early humans knew basic chemistry and could plan for the future. One small paint-kit for a few humans, one major leap for humankind.
 
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 cognitive Uqwz0     
adj.认知的,认识的,有感知的
参考例句:
  • As children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • The cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
2 scant 2Dwzx     
adj.不充分的,不足的;v.减缩,限制,忽略
参考例句:
  • Don't scant the butter when you make a cake.做糕饼时不要吝惜奶油。
  • Many mothers pay scant attention to their own needs when their children are small.孩子们小的时候,许多母亲都忽视自己的需求。
3 kit D2Rxp     
n.用具包,成套工具;随身携带物
参考例句:
  • The kit consisted of about twenty cosmetic items.整套工具包括大约20种化妆用品。
  • The captain wants to inspect your kit.船长想检查你的行装。
4 charcoal prgzJ     
n.炭,木炭,生物炭
参考例句:
  • We need to get some more charcoal for the barbecue.我们烧烤需要更多的碳。
  • Charcoal is used to filter water.木炭是用来过滤水的。
5 slabs df40a4b047507aa67c09fd288db230ac     
n.厚板,平板,厚片( slab的名词复数 );厚胶片
参考例句:
  • The patio was made of stone slabs. 这天井是用石板铺砌而成的。 来自《简明英汉词典》
  • The slabs of standing stone point roughly toward the invisible notch. 这些矗立的石块,大致指向那个看不见的缺口。 来自辞典例句
6 microscopic nDrxq     
adj.微小的,细微的,极小的,显微的
参考例句:
  • It's impossible to read his microscopic handwriting.不可能看清他那极小的书写字迹。
  • A plant's lungs are the microscopic pores in its leaves.植物的肺就是其叶片上微细的气孔。
7 adornment cxnzz     
n.装饰;装饰品
参考例句:
  • Lucie was busy with the adornment of her room.露西正忙着布置她的房间。
  • Cosmetics are used for adornment.化妆品是用来打扮的。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   托福素材  sss
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴