水绵属于（）门；木耳属于（）门。

Lang Lang is a world-class young pianist who grew up in Shenyang. He went to a piano school in Beijing when he was just eight. “You need __21__,” his father said. “But if you don’t work hard, no fortune will come.”

What made him sad was __22__ his piano teacher in Beijing didn’t like him. “You have no talent. You will never be a pianist.” As a nine-year-old boy, Lang Lang was badly __23__. He decided that he didn’t want to be a pianist any more. For the next two weeks, he didn’t touch the piano. Wisely, his father didn’t push, but waited.

Luckily, the day came when his teacher asked him to play some holiday songs. He didn’t want to, but as he placed his fingers on the piano keys, he __24__ that he could show others that he had talent __25__. That day he told his father what he had been waiting to hear—that he wanted to study with a new teacher. From that point on, everything turned around.

He started __26__ competitions. In the 1994 International Young Pianists Competition, when it was __27__ that Lang Lang had won, he was too excited to hold back his tears. Soon __28__ was clear that he couldn’t stay in China forever—he had to play on the world’s big stages. In 1997 Lang Lang moved again, this time to Philadelphia, USA. There he spent two years practicing, and by 1999 he had worked hard enough for fortune to take over. After his __29__ performance at Chicago’s Ravinia Festival, gigs in Lincoln Centre and Carnegie Hall started __30__ in, Lang Lang finally worked to reach the place where fortune spots him, and lets him shine.

21. A. exercise                        B. fortune                     C. knowledge                D. wealth

22. A. whether                           B. why                         C. when                       D. that

23. A. hurt                          B. weakened                 C. ruined                      D. frightened

24. A. seemed                     B. admitted                   C. noticed                     D. realized

25. A. in all                        B. above all                  C. after all                    D. at all

26. A. receiving                  B. accepting                  C. winning                   D. beating

27. A. told                          B. mentioned                C. announced                D. recognized

28. A. this                          B. it                             C. that                          D. what

29. A. successful                 B. cheerful                   C. respectful                 D. meaningful

30. A. pulling                     B. breaking                   C. falling                      D. pouring

小军用下图形式对所学知识进行归纳，其中甲包含乙、丙、丁…下列关系中，有错误的一组是（　　）

A．A选项

B．B选项

C．C选项

D．D选项

1991年12月25日19：38分，克里姆林宫上空飘扬了69个春秋的苏联“锤子和镰刀”国旗，在暮色中被匆匆降下。在同一根旗杆上，俄罗斯白蓝红三色国旗徐徐升起，苏联从此成为历史。苏联解体对国际关系的直接影响是（）

A.出现了美国独霸世界的格局

B.多极格局形成

C.两种社会制度的矛盾完全消失

D.两极格局瓦解

炼钢的热量来源包括（）。

A.物理热

B.光热

C.电能

D.铝反应热

E.化学热

浅眼爆破法的缺点是（）不够高，工人劳动强度大，劳动生产率低。爆破作业频繁，大大地增加了爆破安全管理的工作