What her most was that nobody had even bothered to tell her about the changed timetable. A

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(答案→)A. upset
B. ignored
C. shocked
D. trapped
解析：句意：最使她烦恼的是甚至没有人愿意告诉她关于时间表变更的事情。ignored忽视；            shocked震惊；trapped使受限制，困住。本题选C项也可以，但有点“夸大其辞”，对于这样的事情“无需大为震惊”，还是A项为最佳答案。