贯彻“三个代表”重要思想，关键在坚持（）
A.与时俱进
B.党的先进性
C.执政为民
D.立党为公
参考答案：A
—Why do you look so tired?
—I ________ a day off since last month. [ ]
A. didn't put
B. didn't get
C. haven't had
D. hadn't taken
马克思主义认为，战争与经济的关系中，战争的目的是为了为了一定的（）。
