Bats are surprisingly long-lived creatures, some____________ a life span of around 20 years.
A．haveB．hadC．to haveD．having
D
本題考查獨立主格結(jié)構(gòu)。語意：真想不到，蝙蝠是長壽動物，有些蝙蝠的壽命長達20年。結(jié)合語意和句子結(jié)構(gòu)可知此處為獨立主格結(jié)構(gòu)，having的邏輯主語是前面的some。
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