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 2009-12-30

时间:2010-05-19 06:34来源:互联网 提供网友:mark@li   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)

Before you pay big money for caviar, check with two New York City high school students. Brenda Tan and Matt Cost worked with DNA1 barcoding experts at Rockefeller University and other researchers at the American Museum of Natural History to identify hundreds of food samples, assorted2 hairs and animal bits in their neighborhood. The Trinity School seniors discovered 95 different species of animal and 11 cases of fraudulent food labeling. Their findings appear in the January issue of the journal BioScience.

The professional researchers provided DNA sequences for the samples the students collected. The kids then checked the sequences against the database at barcodinglife.org

The high schoolers found everything from pigeons and Pomeranians to an invasive latrine fly and what looks to be at least a new subspecies of cockroach3. A supposed sheep’s milk cheese was actually from cows. And alleged4 sturgeon caviar was just cheap Mississippi paddlefish eggs. But there was good news: all eight classmates who provided hair for the study turned out to be human.

 


点击收听单词发音收听单词发音  

1 DNA 4u3z1l     
(缩)deoxyribonucleic acid 脱氧核糖核酸
参考例句:
  • DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
  • Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
2 assorted TyGzop     
adj.各种各样的,各色俱备的
参考例句:
  • There's a bag of assorted sweets on the table.桌子上有一袋什锦糖果。
  • He has always assorted with men of his age.他总是与和他年令相仿的人交往。
3 cockroach AnByA     
n.蟑螂
参考例句:
  • A cockroach can live several weeks with its head off.蟑螂在头被切掉后仍能活好几个星期。
  • She screamed when she found a cockroach in her bed.她在床上找到一只蟑螂时大声尖叫。
4 alleged gzaz3i     
a.被指控的,嫌疑的
参考例句:
  • It was alleged that he had taken bribes while in office. 他被指称在任时收受贿赂。
  • alleged irregularities in the election campaign 被指称竞选运动中的不正当行为
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:   SSS  fraudulent
顶一下
(2)
66.7%
踩一下
(1)
33.3%
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