题目解析:
A 用 archeologists 去定位,定位到全文最后一句话: This abundance is notable in Roman settlements (especially urban sites) where the labor that archaeologist have to put into the washing and sorting of potsherds (fragments of pottery) constitutes a high proportion of the total work during the initial phases of excavation.这句话本身是说罗马的定居点遗留下来的 pottery 很多。往前寻找支持的主旨句,发现前文有个很明显的 However,转折前后主要是说罗马发现的 pottery 的量和以往不同,数量非常丰富。随后就在这句对应部分提到考古学家们在罗马的这个定居点的大,也是为了突出在这里发现的 pottery 的数量之多。所以真确答案就是 A。