题型分类:态度题
题干分析:根据ancestors' graves定位到原文:It may be they wanted to live as near as possible to their ancestors' graves ...
选项分析:
but we're only guessing 对应A选项only a guess。
B选项中的evidence原文并未提到也没有证据来证明教授的猜想
C选项,原文只说只能猜测,但是没有说马上回disprove
D选项,not appropriate属于无中生有信息
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