单选题 Many students today display a disturbing willingness to choose institutions and careers on the basis of earning potential.
A. offensive B. depressive C. tiresome D. troublesome

【正确答案】 D
【答案解析】[解析] 本题的四个选项都是形容词。D项的意思是“麻烦的”，与“disturbing烦扰的”意思相吻合。A项“讨厌的，无礼的”、B项“郁闷的”、C项“无聊的”都与题干中的词义不符。