托福阅读几道题帮助大家认识句子插入题的内容。
怎样利用逻辑关系来解题呢?以题目为例(来自TPO27 Predator-Prey Cycles)：
原段落：Predators are an essential factor in maintaining communities that are rich and diverse in species. Without predators, the species that is the best competitor for food, shelter, nesting sites, and other environmental resources tends to dominate and exclude the species with which it competes. ■This phenomenon is known as “competitor exclusion”. ■However, if the community contains a predator of the strongest competitor species, then the population of that competitor is controlled. ■Thus even the less competitive species are able to survive. ■For example, sea stars prey on a variety of bivalve mollusks and prevent these bivalves from monopolizing habitats on the sea floor. This opens up space for many other organisms. When sea stars are removed, species diversity falls sharply. Therefore, from the stand point of diversity, it is usually a mistake to eliminate a major predator from a community.
待插入句：As a result, there are not enough of the strong competitions to monopolize the environment’s resources.
逻辑解题方法分析：单看待插入句子，句子中的as a result是表示因果关系的逻辑词，引出结果性质的内容-最强势的竞争者不能独占资源。所以前面内容必定是原因。对原文内容进行分析，没有明显的表示原因的逻辑，但是在插入位置三后面出现的thus是一个表示结果的逻辑信号词，查看插入位置三前后的内容，在意思上也是合适的，thus是表示对结果的进一步说明。所以选择第三个位置。
对于托福阅读句子插入题的逻辑解题方法值得说明的有两点：
1.通过TPO阅读题目整体看来，可以使用逻辑解题的题目比较多。逻辑关系词并不一定出现在待插入句子中，但是会出现在段落中成为解题的关键。
2.利用逻辑解题时，除了关注逻辑词之外，一定要注意语义关联，比如以上段落中for example的出现很大程度上意味着前后的联系是紧密的，不容插入句子的，这些语义关联是解题的辅助信息。还要关注句子中出现的指示代词。
以上就是小编带来的托福阅读几道题帮助大家认识句子插入题，熟悉一下托福阅读句子插入题还是会有很大帮助的!