Bats are surprisingly long-lived creatur...

Bats are surprisingly long-lived creatures, some____________ a life span of around 20 years.

A．have

B．had

C．to have

D．having

D 【解析】本题考查独立主格结构。语意：真想不到，蝙蝠是长寿动物，有些蝙蝠的寿命长达20年。结合语意和句子结构可知此处为独立主格结构，having的逻辑主语是前面的some。

考点分析：

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