Many students were watching the story of the heroes from Changjiang University on TV, moved to tears.
A. all of them
B. all of whom
C. all of that
D. all of which
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(答案→)A. all of them
B. all of whom
C. all of that
D. all of which
解析：考查独立主格结构：句意：很多学生在观看电视上长江大学英雄的故事，所有的人都被感动的流泪了。因为没有连词，逗号前面是完整的句子，后面可能是定语从句，也可能是独立主格结构，因为move是及物动词，用过去分词表示被动，不是谓语，所以不是定语从句，而是独立主格结构，选A。