针对此类推理型题,如果四个选项中有表述不确定性的,例如含有关键词:can/could、may/might、be able to、seem/seem to、probably、unlikely/likely、some、not all、uncertain等,则:
1. 若有一个选项含这些表述不确定的关键词,基本就是正确答案
2. 若有多个选项含这些表述不确定的关键词,正确答案在这些选项中选择
请看下面的例子
2006年Text3第32题
We can infer from Dr. Myers and Dr. Worm’s paper that ________.
A. the stock of large predators in some old fisheries has reduced by 90%
B. there are only half as many fisheries as there were 15 years ago
C. the catch sizes in new fisheries are only 20% of the original amount
D. the number of larger predators dropped faster in new fisheries than in the old
此题中,题干含有infer,四个选项中只有A含有表述不确定的some,所以A是正确答案