GRE考试

根据网考网考试中心的统计分析，以下试题在2019/9/6日GRE考试习题练习中，答错率较高，为：34%
【单选题】 The passage suggests that one major difficulty in establishing patterns of migration is
A．(A) the infrequency of life course events, which restricts the amount of data available to demographers
B．(B) the overwhelming availability of proxies in migration patterns, which creates a degree of stasis in migration records
C．(C) the lack of parishioner birth records, which limits the hard evidence upon which demographers base their observations
D．(D) the homogeneity of single parishes, which makes it difficult to distinguish the motivations of migrants
E．(E) the repetitive nature of migration, which results in a surfeit of unusable data that overwhelms demographers

网考网参考答案：C，答错率：34%
网考网试题解析：
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