单选题
It is difficult to describe the countryside during the period under consideration, partly because the inhabitants______
A、
often did not fit the conformity of their society
B、
sometimes changed their system of life
C、
move around too much for us to study properly
D、
left no documents
【正确答案】
C
【答案解析】
第二段第一,三句指出,要描述这些世纪的农村的情况有两个困难,第二是在大扩张中的居民不符合我们的统计标准,他们都没有固定定居。
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