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GRE阅读的众多题型中，句子作用题的套路最为清晰明了！一旦熟悉这种题目的解法，我们可以做到“秒选”这类题。
这类题考查大家对句间句内关系的理解
先给大家两分钟时间来看一个20190317大陆地区考到的一个原题：
阅读机经
Scientific consensus is that humans first began to have a warming effect on Earth’s climate within the past century, after coal-burning factories, power plants, and motor vehicles began releasing carbon dioxide (CO2) and other greenhouse gases in significant quantities into the air. However, evidence suggests that human agricultural activities may have had such an effect much earlier: concentrations of CO2 started rising about 8000 years ago, even though natural trends indicate they should have been dropping; methane levels rose similarly about 3,000 years later. Without these rises, however, current temperatures in northern parts of North America and Europe would be cooler by three to four degrees Celsius-enough to inhibit agriculture-and an ice age would probably have begun several thousand years ago in northeastern Canada.
1.Which of the following best describes the function of the highlighted sentence?
A.It undermines the assumption that human activity has had a significant impact on Earth’s climate
B. It supports the assumption that Earth’s temperatures have risen appreciably over the past 100 years
C.It questions the assumption that greenhouse gases have had a warming effect on Earth"s climate
D. It challenges the assumption that human activity began to affect Earth’s climate after the advent of industrialization
E.It supports the assumption that greenhouse gases are a direct by-product of industrial activities
接下来，进入我们的“秒选”逻辑
第一步判断高亮句和前一句是转折的关系，从而可以排除B和E，因为这两个选项的核心动词为support；剩下A、C、D三个选项，这三个选项从方向上判定都正确，进入下一步。
第二步
直接读高亮句，可以看到高亮句是在强调人类活动在更早之前就对气候有了影响，突出时间更早的概念，直接比对A、C、D三个选项中，只有一个选项是在强调时间的先后，那就是我们的正确答案，本题直接选出D。【答案D】
这就是做GRE阅读的逻辑，只要方法对你就能做对题！
但是：读懂文章不一定能够做对题，但是如果能够理解各种题型的逻辑，就算文章读得不是很懂，我们也能做对题。
就好比，现在你问我，上面这篇文章全文到底在讲什么，我不是很清楚，因为我还没有读完全文，这道题就做完了。
本文如果对你有帮助，请点赞收藏《如何“秒选”句子作用题？》，同时在此感谢原作者。
