单词：mastodontoid
单词：mastodontoid 相关文章
ARI SHAPIRO, HOST: Artifacts found in Southern California have puzzled scientists for years. Some now say they are proof that humans lived in the area 130,000 years ago, well before anyone thought. That would make them the oldest evidence of humans i
2017年NPR美国国家公共电台4月
Some of this ice age dung was found beneath the skull in the Aucilla. The dung contained plant remains that tell us what the mastodon was browsing on 13,000 years ago or morea mixture of trees and grasses. This suggests that ice age Florida was drier
探索与发现2013年
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单词解析速记
It has long been thought that mammoths and mastodons rambled over North American subartic grounds between 75,000 and 10,000 years ago, and were made extinct by hungry new arrivals on the scene, human beings. But new evidence indicates mastodons proba
2015年Scientific American(二)月
77 流星雨成因探索 Date=8-2-01 Ttle=science report - the Perseid meteor shower Bline=Mario Ritter （Start at 59
科技之光
One of my fellow midshipmen at the U. S. Naval Academy was performing poorly in class and reported to his company officer for counseling., Your marks are deplorable! the officer scolded. Is there a problem-that has kept you from studies?No, sir, the
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