单词:phenyl-arsenoxide
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The weekly Special English program - American Stories. Our story today is called To Build a Fire. It was written by Jack London. Here is Harry Monroe with the story. The man walked down the trail on a cold gray day. Pure white snow and ice covered th
Our story today is called The Gatewood Caper. It was written by Dashielll Hammett. Here is Harry Monroe with the story. Millionaire Harvey Gatewood had a desk as big as a bed in the middle of his office. He looked almost as big as his desk. Gatewood
Now, the Special English program American Stories. Our story is called The Celebrated Jumping Frog of Calaveras County. It was written by Mark Twain. Here is Shep O'Neal with the story. A friend of mine in the East asked me to visit old Simon Wheele
Now, the Special English program American Stories. Today's story is called The White Heron. It was written by Sarah Orne Jewett. Here is Kay Gallant with the story. The forest was full of shadows as a little girl hurried through it one summer evening
Now, an American short story in Special English. Our story today is The Devil and Tom Walker. It was written by Washington Irving. Here is Shep O'Neal with our story. Before we begin our story, let us go back 300 years to the late 1600s. In those ye
Now the VOA Special English program American Stories. Our story is called The Animals Give Themselves from the book Cloud Walker by Joe Montour published by Forum Publishing. Mr. Montour is a native American from the Mohar nation. He has written sto
Now the Special English program American Stories. And our story today is called ''Judge''. It was written by Walter D. Edmonds. Here is Harry Monroe with the final part of our story. When Charlie Hestle died, he left a wife and nine children. They l
Now, a VOA Special English story for the New Year. It is called Bright Hill. Our storyteller is Shep O'Neal. A few days before Christmas, Chantal Yardley visited Jacob Samuels in the old people's home. Do you know they aim to blow it up? said Mr. Sa
Now the Special English program American Stories. Our story today is called The White Circle. It was written by John Bill Coliton. Here's Shep O'Neal to tell you the story. As soon as I saw Anvol sitting in the apple tree, I knew we would fight, I a
Now, the Special English program American Stories. Our story this week is Keesh. It was written by Jack London. Here is Shep O'Neal to tell you the story. Keesh lived at the edge of the Polar Sea. He had seen thirteen suns in the Eskimo way of keepin
Today's story is adapted from the young adult novel Stepping on the Cracks by Mary Downing Hahn. This book won the Scott O'Dell Award for Historical Fiction. The story is about Margaret Bayger, an 11-year-old girl. She tells her about her life in a s
Now, the Special English program American Stories. Our story today is Hard Rock Maple. It is about two people living in New England. They seem like the hard rock maple trees often found in that area, nothing can make them move. Today's story was writ
Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal
its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th
This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
By Deborah Tate Capitol Hill 27 June 2006 U.S. Defense Department officials Tuesday briefed members of a Senate panel behind closed doors about the possibility that North Korea may launch a long-range missile. A key lawmaker says such a launch does
WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo