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题目内容
（商丘师范学院大学英语3(专升本)）
(2). (单选题) Why people are always unhappy?(本题3.0分)
A、 to compare with others
B、 to be ungrateful
C、 to focus on minor flaws
D、 all of the above
A、 to compare with others
B、 to be ungrateful
C、 to focus on minor flaws
D、 all of the above
参考答案