单词：sediment sampler
单词：sediment sampler 相关文章
TEXT The author finds out that good intentions alone are not enough when his attempt to be kind to an old man leaves them both feeling worse than before. The Sampler In a certain store where they sell puddings, a number of these delicious things are
大学英语精读第一册
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
Scientific American(五)月
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
Scientific American(九)月
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
Scientific American(十一)月
(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
托福听力短文
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
2017年VOA慢速英语(五)月
This is Scientific American's 60-Second Science, I'm Christie Nicholson. Got a minute? During the last ice age our problem was too little carbon. Unlike today where too much carbon is causing global warming. Past glacial ages occurred partly because
Scientific American(七)月
This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Farmers fertilize their fields to get the maximum meal from their crops. But the effects of these loads of nitrogen and phosphorous extend beyond the field and past
Scientific American(三)月
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
Scientific American(四)月
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
VOA标准英语2012年(十月)
A sword, with the red rust on it, 一把剑，红色的锈迹斑斑， That flashed in the battle tide, 回想起，弥漫的战火硝烟， When from Lexington to Yorktown 从克星敦，再到约克镇上， Sorely men's souls were tried; 伤痛灵魂
美国语文第五册
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
TED演讲商业篇
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
世界各地新闻集锦
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
经济学人综合
The first human inhabitants（居民 ） of North America settled at least 2,500 years earlier than the people previously identified as the first Americans. So say archaeologists, who have unearthed a trove of stone artifacts belonging to the early A
英语新闻
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
英语新闻
首先，我建议同学们不要上完辅导班就去参加考试。虽有趁热打铁之说，但是我相信绝大部分同学在上课期间已经把大部分的精力用于听讲和记笔记了，回家之后基本上就直奔安乐窝了。能够
雅思英语
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？
托福英语
Order clerk: Hello, Torinos Restaurant. Nancy: Hello, Id like to place a delivery order. Order clerk: Can I have your address and the major cross streets, please? Nancy: Its 1212 Main Street, and the nearest cross streets are Speedway and Highland. O
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