阅读短文，选出填入空格最合适的一项： No complete skeleton …

第 3 题单选题模拟题中等

阅读短文，选出填入空格最合适的一项：

No complete skeleton of the animal has ever been found, but from the shape of its teeth, scientists have ___ that it lived mainly on leaves.

词义辨析完形填空固定搭配