[原创]兰花历史资料求NN鉴定是否为原文！（含另两篇背景资料）

wisdomcorn

UP!

wisdomcorn

UP!

fangxia76

Ding

counyo

The discovery indicates that orchids arose between 76 and 84 million years ago, making them far older than experts had previously thought.

Experts used the fossil pollen grains to estimate the ages of major branches of orchids living today.

Details of the research by a team in the US are published in Nature journal.

Despite being the most diverse plant group on Earth, orchids are rare finds in the fossil record.

The authors of the Nature paper describe a mass of orchid pollen found stuck to the body of an extinct bee that lived 15-20 million years ago.

The remains of the bee were trapped and preserved in amber from the Dominican Republic.

这段一样的。这篇文章很简单，我好像考了两个逻辑题

百草园Tracy

以下是引用counyo在2008-10-22 12:50:00的发言：

The discovery indicates that orchids arose between 76 and 84 million years ago, making them far older than experts had previously thought.

Experts used the fossil pollen grains to estimate the ages of major branches of orchids living today.

Details of the research by a team in the US are published in Nature journal.

Despite being the most diverse plant group on Earth, orchids are rare finds in the fossil record.

The authors of the Nature paper describe a mass of orchid pollen found stuck to the body of an extinct bee that lived 15-20 million years ago.

The remains of the bee were trapped and preserved in amber from the Dominican Republic.

这段一样的。这篇文章很简单，我好像考了两个逻辑题

可否回忆下考了什么逻辑题？谢谢！

counyo

一个逻辑是第二段的，问什么能undermine一个结论，记不得了，第二段认真看，这段我没怎么看明白。

还有一道题我选的是虽然有很多species,但是气候不适宜保存化石。答案在最后一句话

抱歉啊，我实在想不起来了。对了，好像第一题是问主旨，我选了E,是什么evidences