本次选自雅思听力Section 4，有一定的难度
场景背景介绍：在考古学上，新石器时代是石器时代的最后一个阶段，是以使用磨制石器为标志的人类物质文化发展阶段。这一名称是英国考古学家卢伯克于1865年首先提出的。这个时代是继旧石器时代之后，或经过中石器时代的国度而发展起来的。
HINTS
Neolithic
Ireland
场景背景介绍：在考古学上，新石器时代是石器时代的最后一个阶段，是以使用磨制石器为标志的人类物质文化发展阶段。这一名称是英国考古学家卢伯克于1865年首先提出的。这个时代是继旧石器时代之后，或经过中石器时代的国度而发展起来的。
HINTS
Neolithic
Ireland
Now, there are several hypotheses about the origins of the first Neolithic settlers in Ireland, but most of these contain problems. For instance, there are considerable archaeological difficulties about the theory that they came from England. the evidence doesn't really add up. But there are even greater practical problems about the theory that they came directly from continental Europe. For one thing, it's not clear just how sufficient numbers of men and women could have been transported to Ireland to establish a viable population. As you know, the hunter-gatherer economy which existed beforehand was based on small scattered groups. The farming economy would almost certainly have required much larger communities to do all the work needed to plant and tend sufficient crops to sustain them through the year.