小题1:We were talking on the phone and then the line went dead      .  (突然)

小题2:If        die, life is a broken winged bird that can not fly. (梦想)

小题3:My cousin will celebrate his         birthday with his classmates at his college. (二十)

小题4:How would you          colour to a blind person? (解释)

小题5:One of the keys to         business is careful planning. (成功的)

小题6:We ought to learn to take care of         after entering the high school. (we)

小题7:I have written all the         names on this piece of paper. (win)

小题8:To lose one's life is a tragedy, but to lose one's soul is even      . (bad)

小题9:The teahouse is a popular place for local people to treat their important        .  (visit)

小题10:Her father arranged for her to have an       on her brain. (operate)

今年3月5日是“向雷锋同志学习”题词发表50周年纪念日。50年来，雷锋精神传遍祖国的大江南北，各地不断涌现学习雷锋的典型人物、先进事迹，推动形成人人向善、人人行善、助人为乐的良好社会风尚。材料蕴含了以下哲学道理（）

①劳动和奉献是实现人生价值的根本途径

②要把握事物发展的历史联系

③关键部分的自有功能决定整体功能发挥

④人民群众是社会实践的主体

A.①②

B.①③

C.②③④

D.①②④