例题：What can be inferred about the region including Maine and Quebec during the early 1800s？

（A） The area was economically unified.

（B） The authorities were unable to enforce law and order.

（C） The two governments fought for control of the area.

（D） Most of the people living there spoke only French.

答案是A.

这道题比较难，因为选项都不是原句的简单改写或者复述，你可以从短语“infer about”得到提示它是一道暗示推理题。有了这种思想准备之后，即使你一时没找到答案也不会太灰心。但是题总是要答的，甚至用猜。原对话中的句字“At the time Quebec was a major market for livestock， crops and fish. So a road to Quebec was seen by officials in Maine as necessary for trade”说明，A是正确答案。看来，暗示推理题并不好做。然而，有幸的是，暗示推理题的正确选项与其它3个选项有较大的区别。那就是选项中很少或者根本不用原话，或者原词。就像这一题，选项A中只有一个词重复原文，即area这个很不重要的词。

续前续后题?

例题：What subject is the speaker most likely to discuss next？

（A） The latest practices of accurate mapmaking.

（B） The impact of epidemics on mass migration.

（C） The advantages of establishing international trade agreements.

（D） The technology used to locate the Old Canada Road.

答案是D.

原文的开头和结尾都提到了选项D的内容：开头——“finding it again was a complex process that involved state of our technology： how the location of the roads was pinpointed was very interesting. And I'll return to it as soon as I gave you a little background information.”与结尾——“that's how it came to be lost. This brings me back to the original topic.”