The long speech given by that old professor seemed and endless. He felt so that he nearl

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A. disappointed; boring
B. disappointed; bored
(答案→)C. disappointing; bored
D. disappointing; boring
解析：考查形容词用法。现在分词转换的形容词通常修饰事物，过去分词转换的形容词通常修饰人。Disappointing令人失望的；bored感到厌烦的；句意：那位老教授做得演讲似乎很让人失望，他感到如此的厌倦，几乎要睡着了。故C正确。