单词：Impatiens walleriana
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14 Mike Tyson Waller: I mean it was hard to watch you bite off a piece of the guys ear and spit it out on the 1)ring floor. Tyson: Its hard for me to watch it. You think its hard for you to watch it, you watch it in a joking manner. People watch it
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President Obama again called for action on his proposed health care overhaul plan, saying the government can revamp the current health care system in a way that does not add to the deficit over the next ten years. The president paid a visit to a Was
2009年NPR美国国家公共电台7月
We humans are known to help out members of our own families. When it comes to business we call it nepotism. Now plants have demonstrated the same predilection, in a study published in the American Journal of Botany. Previous research showed that plan
Scientific American(十一)月
Photo taken on July 8, 2013 shows a picture of Wang Linjia (R) and Ye Mengyuan on a mobile phone, at Jiangshan Middle School in Jiangshan, east China's Zhejiang Province. Two Chinese passengers, Wang Linjia and Ye Mengyuan, were killed in a crash lan
世界各地新闻集锦
Step by Step 3000. Book Two. Unit 12. Dictation. In this unit, you'll hear 11 items for dictation. Each item will be presented three times. Write down every word you hear. Item One. Vocabulary. abuse, innocent, mitigate, trauma, equipped, Judith Wall
Step by Step 3000 第二册
Plants Share Light If Neighbor Is Related A study in the American Journal of Botany finds that plants can tell if they're next to a relative and will grow to allow the kin more access to light. Cynthia Graber reports. We humans are known to help out
60秒科学