Now, there are several hypotheses about the origins of the first Neolithic settlers in Ireland but most of these contain problems.
Question 2
正确答案：
A
解析：原文音频：
So we must assume that from the beginnings of Neolithic farming the number of breeding sheep would have considerably exceeded three hundred, and the national cattle herd must have been of a similar size.
Question 3
正确答案：
A
解析：原文音频：
But this method would have severely restricted the range of the colonising fleets.
Question 4
正确答案：
B
解析：原文音频：
The main evidence for their presence consists of impressions on pottery, where a cereal grain accidentally became embedded in the surface of a pot before it was fired.