单词:sediment tests
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When kidnappers attacked a woman on a Guatemala City street and seized her baby daughter, DNA testing came to the rescue. The tests helped reunite the girl with her mother after the baby was left at a religious center with no identification. DNA test
New English Tests Beyond TOEFL, IELTS Since 1964, colleges and universities in the United States have used the Test of English as a Foreign Language, or TOEFL, to measure an international applicants level of English. Universities in English-speaking
This is Scientific America's 60-Second Science, I'm Cynthia Graber. This'll just take a minute. Its hot to research life in extreme environments. There are organisms that thrive in boiling hot thermal vents and in toxic stews. These extremophiles, as
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres a Native American site in Ohio that appeared to be a fort. But recent discoveries by archaeologists at the University of Cincinnati show thats n
Roughly 1,000 years ago, Europe enjoyed several centuries of balmier average temperatures. Dubbed the Medieval Warm Period, it was the last time before the present that agriculture could flourish in Greenland. This era also provided fodder for countl
Rese / Botswana speaker I think.. all people learn, because they give you the opportunity to evaluate how much you know and how far you've gone with whatever it is that you're learning, and they give you a chance to also see how close you are with yo
I hate tests. Who was it who decided that tests are a good way to test your knowledge? Probably someone who liked putting students through pain. Tests are so unfair. People who are good at remembering lots of things for a short time are good at tests
(MA) Look at our topographical map and you'll see that the middle third of the North American continent --- from the Rocky Mountains almost to the Mississippi River --- is pretty flat. This is the Great Plains. This kind of area is sometimes called
About 110 million years ago, a large plant-eating dinosaur covered with sharp points walked the land. Called a nodosaur, it is now the best example of its kind ever found. This new species of dinosaur is being called a one-in-a-billion discovery. Rec
Ten US banks fail 'stress tests' 十个美国银行应力测试失败 Ten of America's largest 19 banks need a combined $74.6bn (50bn) of extra funds to boost(推进,提高) their cash reserves.(现金储备) That is the main finding of the so-called stress tests
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. As scientists delve deeper beneath the oceans surface, they find bizarre creatures that have adapted to harsh and extreme environments. Now comes a new o
Blacks, Latinos Score Lower on Tests than Whites, Asians White and Asian students continue to do better on tests than black and Latino students, says the U.S. Department of Education. This information, which comes from the governments 2015 Nation's R
Are Children Taking Too Many Tests? Urban school systems in the U.S. give too many tests, says a new study. President Obama agrees. In an open letter to parents, he asks: Ive got a pop quiz for parents and teachers across the country. If our kids had
Lake Sediment Could Better Date Ancient Finds Radiocarbon dating is the best-known and most widely used method to determine the age of organic material, such as bone or wood or plant matter. All such material contains radioactive carbon atoms, known
What then of manned space exploration? 那载人的空间探索呢? The government recently announced plans to return to the moon by 2024. 美国政府最近宣布了2024重返月球的计划。 The successful conclusion of that mission will result
The 9/11 terrorist attack in New York not only killed people. It also killed local businesses, too, as many residents and companies moved out of the devastated area. 10 years on things are finally recovering. One Chinese restaurant has been part of t
The geology of the planet 地球的地质情况 Welcome to the Anthropocene 欢迎来到人类纪 Humans have changed the way the world works. Now they have to change the way they think about it, too 人类改变了世界运行方式,现在,人类不
CANBERRA, Oct. 14 (Xinhua) -- Australian scientists have made the alarming discovery that sea levels have risen more in the past century than at any other comparable period in the past 6,000 years. Researchers from the Australian National University
世界本没有长难句,修饰成分多了,便有了长难句。 阅读速度大部分来于短时间内理解长难句的能力。 大家在看长难句的时候,多思考,一个句子为什么这么长,常见的修饰成分到底有哪些?