1 靠同义词判断
题目：Experts' definitions of migration tend to vary according to their area of study. （T）
原文：But migration is a complex issue, and biologists define it differently, depending in part on what sorts of animals they study.
experts 和biologists 是上下义词替换
definition 和 define 词性替换
vary 和differently 同义替换
according to 和depending on 同义替换
2 不认识词，靠褒贬判断
题目：Tea and beer both helped to prevent dysentery 痢疾in Britain. (T)
原文：The antiseptic properties of tannin, the active ingredient in tea and of hops in beer - plus the fact both are made with boiled water - allowed urban communities to flourish at close quarters without succumbing to 屈服waterborne diseases such as dysentery.
这个句子比较长，挑出主干，破折号里面的东西不看。实在不认识succumb to 可以通过flourish 来判断是褒义的
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