在托福阅读备考过程中，词汇题是阅读题中必考的一个部分，而想要成功答对所有词汇题，并非仅从词汇量一个方面入手就可以。那么，在以下方面，我们就为大家带来一些TPO中的经典词汇题，大家不妨来练习一下吧。
Paragraph 4: In lowland country almost any spot on the ground may overlie what was once the bed of a river that has since become buried by soil; if they are now below the water’s upper surface (the water table), the gravels and sands of the former riverbed, and its sandbars, will be saturated with groundwater. 【TPO1- Groundwater】
7. The word “overlie” in the passage is closest in meaning to
○ cover
○ change
○ separate
○ surround
答案：(1)
