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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

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发表于:2019-01-02 / 阅读(125) / 评论(0)

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VOA标准英语2012--Lake Sediment Could Better Date Ancient Finds

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BBC Learning English London Life Thames watermen and lightermen [Barge FX] William:A sound familiar to all Londoners - a noisy boat moving along the River Thames. [End FX] My names William Kremer and this is London Life. The people who move boats al

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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

发表于:2019-02-14 / 阅读(70) / 评论(0)

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学英语单词

attitude-measuring sensor

aviation automatic weather observing system (avawos)

black tellurium (nagyagite)

bupleuramol

carcinoplax purpurea

Carpinus betulus