in what he was reading he didn’t see me before he almost knocked me down.AAbsorbingB．To

问题补充：

in what he was reading, he didn’t see me before he almost knocked me down.A．AbsorbingB．To be absorbedC．AbsorbedD．Having absorbedC

答案：

(答案→)C

解析：考察形容词用法。本题中的固定搭配be absorbed in…沉浸于…；本句中的形容词短语absorbed in…对句子的主语he的情况解析说明。句意：沉浸于他所阅读的知识，他差点撞上我。故C正确。