TPO56听力Lecture3原文+MP3+题目+答案下载

TPO56听力Lecture3原文+MP3+题目+答案下载

TPO56听力Lecture3原文：

Listen to part of a lecture in an archaeology class. We've been talking about techniques for locating and dating archaeological artifacts. Now, in some places, archaeological investigations are difficult, and we have to use some special techniques, in the country of Iceland, for example. Now um Iceland is a volcanic island located in the North Atlantic ocean，and and about 10% of it is covered by glaciers.

So is it too cold to work there? Or maybe everything is under the ice?

Uh No, that's not the problem. It's that Iceland has virtually no trees to hold down soil. And So there's been a lot of erosion, especially erosion of soil from the highlands to lower coastal areas. And this erosion has buried much of Iceland under deep deposits of soil. And Remember what I said about few trees. Well With so little wood available, the earliest dwellings in Iceland were built mainly from compressed pete.

Did you say pete?

Yes，pete. That’s a light kind of airy soil that comes from bogs and wetlands and contains a high proportion of decayed organic matter. Anyway, the peak can be compressed and dried and made into big, thick blocks sand. That's what the walls of the early Icelandic houses were made of mostly, now, since the walls of these old houses were made basically of a kind of soil, they're really hard to locate underground, cause the material these buried structures are made of doesn't differ very much from the soil that surrounds them.

So how do you find these pete walls buried in all that other soil?

.......一下原文省略几百字！

TPO56听力Lecture3题目：

1. What aspect of archaeology in Iceland does the professor mainly discuss? 

A Various technic ues for dating archaeological sites. 

B Causes of damage to a Viking-era house. 

C Evidence of early agricultural tools. 

D A method for locating buried structures.

2.  What aspect of archaeology in Iceland does the professor mainly discuss? 

A Various technic ues for dating archaeological sites. 

B Causes of damage to a Viking-era house. 

C Evidence of early agricultural tools. 

D A method for locating buried structures.

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