Condoleezza Rice is used to standing out. It is not only because she holds the position as U.S. Secretary of State. Her youth, gender and skin color have 36 a lot of attention throughout her political career.
Condoleezza Rice, 37 as Condi to her close friends, was born in 1954 in Birmingham. During 1950s,blacks were not treated as 38 citizens in the south. Although slavery was 39 in 1865,the southern states passed their own laws to continue the 40 of blacks and whites. Despite the discrimination 41 black people, her parents told her she could become 42 she wanted. They taught her to believe that great things were 43 for her.
Rice was a gifted student with a 44 for the piano and she entered college at the age of 15 with the 45 of becoming a concert pianist. Along the way she was 46 by political scientist Josef Korbel, the father of former U.S. Secretary of State Madeleine Albright.Rice 47 her plans and studied international politics, and in the 1980s she was teaching at Stanford University, 48 her career developed quickly. She 49 on George H. Bush's national security council(顾问) in 1989.Later she 50 to Stanford, and became its youngest, first female and first 51 provost after two years.
In 2001,Rice re-entered the political world, 52 George W. Bush's national security advisor. She has drawn international 53 in this position, and has been the most powerful national security advisors in American 54 .
She held this position until 2005,when 55 Secretary of State.
36.A. directed B. turned C. paid D. attracted
37.A. known B. Considered C. Seen D. accepted
38.A. respectful B. equal C. different D. noble
39.A. finished B. Stopped C. Prevented D. ended
40.A. difference B. disagreement C. separation D. division
41.A. against B. to C. with D. towards
42.A. whoever B. whomever C. whatever D. whichever
43.A. desiring B. waiting C. preparing D. longing
44.A. talent B. interest C. hobby D. favourite
45.A. purpose B. goal C. intention D. attention
46.A. effected B. affected C. impressed D. influenced
47.A. changed B. postponed C. cancelled D. exchanged
48.A. which B. where C. when D. that
49.A. acted B. waited C. served D. called
50.A. paid a visit B. showed concern C. attended D. returned
51.A. black B. white C. capable D. efficient
52.A. turning B. holding C. becoming D. taking
53.A. praise B. approval C. criticism D. attention
54.A. politics B. history C. culture D. government
55.A. elected B. invited C. appointed D. succeeded
，方向垂直于纸面向里．一正离子沿平行于金属板面，从A点垂直于磁场的方向射入平行金属板之间，沿直线射出平行金属板之间的区域，并沿直径CD方向射入圆形磁场区域，最后从圆形区域边界上的F点射出．已知速度的偏向角
，不计离子重力．求：
