单词:graded sediments
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A: Do you know anything about Dr. Miller's classes? B: Yes. Are you in his class? A: I'm thinking of taking his class next semester. B: He really knew his stuff, but he graded hard. Would that be OK? A: Yes, I really need someone who is really good.
Dinosaur Death Leads to Rise of Fish 恐龙死亡导致鱼类增多 Tens of millions of years ago, an asteroid hit what is now the Yucatan Peninsula of Mexico. The event led to a global mass extinction that has been linked to the end of the dinosaurs
1. In a surprise visit to Iraq, Vice President Dick Cheney suggests Iraq's elections are a major step toward withdrawing US troops as a string of attacks kills 19. 2. President Bush unapologetically d
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
As investigators studied the large serrated teeth of the giant shark, they discovered the massive power of its bite - a force of 20 tons. 在调查者研究这些巨鲨的大型锯齿状牙齿时,他们发现了它巨大的咬合力可达二十吨。
EDUCATION REPORT - Computer Graded Writing By Nancy Steinbach Broadcast: Thursday, August 12, 2004 This is Steve Ember with the VOA Special English Education Report. Last year, a report by a committee
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
1. Iraqi police arrest eight Sunni Arabs in Kirkuk for allegedly plotting to assassinate the judge who prepared the case against Saddam Housein. 2. An earthquake measured at least magnitude 5.9 shakes
美联社,新闻一分钟,law,guide,Iraq,1. Chief Justice nominee John Roberts says he'll decide right-to-die cases using the law not his personal views as his guide. 2. Al-Qaida in Iraq claims responsibility for more than a dozen blasts in
1. Intense fighting continues in Iraq. At least 69 people were killed in Baghdad Tuesday, following a day of bombings and mortar fire between Sunnis and Shiites. 2. The US Senate agreed to bring the P
托福阅读:在阅读中感受文章风格的不同 1、托福阅读文章来源于哪里? 所有的托福阅读文章都是语言枯燥无味、措词准确精妙、风格独树一帜。因为所有的托福阅读文章都选自美国的大中学校的
Chapter 1 第一章 The Setting of the Stage 人类历史舞台的形成 We live under the shadow of a gigantic question mark. 人类一直以来都生活在一个巨大问号的阴影下面 Who are we? 我们是谁? Where do we come from? 我们从哪
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
We wandered through a confusion of departments where people sat at large tables doing intent, 我们漫步穿过一个又一个部门,只见人们坐在大桌子跟前, investigative things with arthropods and palm fronds and boxes of yellowed bo
Only about one bone in a billion, it is thought, ever becomes fossilized. 据认为,在10亿根骨头当中,只有大约l根能变成化石。 If that is so, it means that the complete fossil legacy of all the Americans alive todaythat's 270 mill
Mitochondria manipulate oxygen in a way that liberates energy from foodstuffs. 线粒体支配着氧,释放食物中的能量。 Without this niftily facilitating trick, life on Earth today would be nothing more than a sludge of simple microbes. 没有
In the 1830s, the British naturalist Edward Forbes surveyed ocean beds throughout the Atlantic and Mediterranean 19世纪30年代,英国博物学家爱德华福布斯勘察了大西佯和地中海各处的海床, and declared that there was no li
As one commentator has put it, fleeing would mean selecting a slow death over a quick one. 有一位评论家说,逃跑意味着在慢死和快死之中选择慢死。 The death toll would be very little affected by any plausible relocation effort,