标签：spectrum 相关文章
46.Vision Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see well that to develop an acute sense of smell. In the course of evolution members
新概念优美背诵短文50篇
U.S. President-elect Barack Obama is calling on Congress to move quickly on his economic stimulus plan. But some Republicans want more time to study the details. 美国当选总统巴拉克.奥巴马呼吁国会尽快批准他的经济刺激方案。不
VOA双语新闻 2009年1月
Sometimes it is hard to see the light, especially it lies in the invisible spectrum, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of
2015年Scientific American(一)月
Hundreds of millions of years ago a humble fish swam in the lakes and rivers of the supercontinent Gondwana. Eventually Gondwana broke apart, becoming the continents we know today. And the descendants of that fish, now called cichlids, continue to sw
2017年Scientific American(一)月
On todays Moment of Science, well be sniffing our way through a controversial culinary conundrum: the great cilantro debate. 今天的《科学一刻》栏目，我们将来探讨一个有争议性的烹饪难题：关于香菜的大辩论。 Accordi
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As millions mark the 100th International Women's Day, a new report has found there are increasingly less women in senior management positions around the world. Grant Thornton's Global Head of public policy and external affairs, April Mackenzie, says
万花筒2011年
206. The spinal cord operation脊髓手术 spectra-sponge There was a lecture given at a medical school on a spinal cord operation. The professor began: In order to have a speedy but safe operation, one must speculate on the entire spectrum of possib
胡敏托福词汇记单词
Automatic US Spending Cuts Loom Under current U.S. law, automatic cuts to domestic programs and national defense will begin in 2013, because a congressional committee failed to agree on trimming Americas federal deficit. Already, many lawmakers say t
VOA标准英语2011年(十一月)
Autism spectrum disorder is a complex neurological disorder that affects a person's ability to communicate and interact with others. For decades some parents, researchers and doctors have debated a possible link between autism and vaccines that conta
VOA标准英语2010年(三月)
STEVE INSKEEP, HOST: The number of Americans who are drinking - drinking to a point that's harmful or dangerous - is on the rise. That's according to federal survey data in recent years. The increase is notable among older adults and especially notab
2018年NPR美国国家公共电台1月
RAY SUAREZ, HOST: Let's turn to the city of Chicago. It's been a momentous year in Chicago in part because of the continued spike in violent crime. A poet is trying to change the reasons people talk about his hometown. Kevin Coval has been called Chi
2017年NPR美国国家公共电台4月
Everybody knows that the Catholic Church has been shaken in the past few years by scandals involving the sexual abuse of children. There may even be a general suspicion among some people that Catholic priests are more likely to abuse children than ot
英语时差8，16
By Carol Pearson Washington, DC 13 September 2006 watch Older Father report Studies show older mothers are more likely to have children with Down Syndrome and other abnormalities. Now new research suggests children of older fathers are also at risk
2006年VOA标准英语（九月）
Experts: Gun Violence Is Public Health Crisis in US 专家称枪支暴力引发美国公众危机 WASHINGTON Gun violence in the United States has claimed the lives of more than 30,000 men, women and children in recent years, according to the Centers
VOA常速英语2013年(九月)
South African President Jacob Zuma, 25 Mar 2010 (file photo) South African leaders are trying to appease tensions caused by the murder of white supremacist leader Eugene Terre'Blanche. He was killed Saturday by two black workers in an apparent disput
VOA标准英语2010年(四)月
Senator Joseph Lieberman, right, gestures during a news conference on Capitol Hill in Washington, 11 Feb. 2010 (file photo) The Chairman of the U.S. Senate Homeland Security Committee says extreme partisan anger on the left and right is increasing th
VOA标准英语2010年(四)月
There are now more than 16 million bitcoins incirculation, with a total market cap of 130 billiondollarsmore than the market value of Netflix, Priceline or Starbucks. Just going by numbers, bitcoin is the one coin to rule them all. 目前在流通的比
2018年科学美国人4月
The James Webb telescope is being prepped for launch in 2021 and it will change the way that NASA views the universe. James Webb is designed specifically to look into the infrared, and this is an area of the spectrum where we have looked before, but
VOA标准英语2019年(一月)
By Phillip Wellman Abidjan 12 November 2007 An official spokesman for Ivorian President Laurent Gbagbo has said the president believes political leaders from across the spectrum must work together in order to guarantee lasting peace in the country. T
VOA常速英语2007年（十一月）
Louis Armstrong 路易斯阿姆斯特朗 Like most of the great innovators in jazz, Louis Armstrong is a small man. But the extent of his influence across jazz, across American music and around the world has continuing stature. His life was the embod
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