任务型阅读: 阅读下列材料, 从所给的六个选项（A, B,C, D, E, F）中，选出符合各个小题要求的最佳选项。
__小题1:__Wang Lin is a university student who studies music. He hopes to get some practical experience of foreign music from western band.
___小题2:__Simon is interested in Chinese literature, so he came to China with his parents. During his stay in Beijing. He wants to know more about Chinese contemporary Literature.
___小题3:__ Li Hua is an eighteen-year-old boy. He is studying in a high school. After many months’ study, he is tired of his lessons. He would like to experience something adventurous( 冒险的).
___小题4:___ . Alice is an American girl who studies Art in Beijing University. She hopes she can enjoy some wonderful oil paintings.
__小题5:___. Victoria likes Chinese music. She hopes to listen to different songs performed by different bands. She doesn't care much about what kinds of songs they are.
A．An acrobatic (杂技)soul: To celebrate its 50th anniversary, the China Acrobatic Troupe will present "The Soul of China", where the seemingly impossible is made real. Performers will take their art and their bodies to the edge. Chills will run down you spine as you watch breathlessly.
B．Exhibitions Joint Show: A group ink painting exhibition is running at the Huangshicheng Art Gallery in Beijing. About 50 works by 25 young artists including Ge Yun and Yu Yang are on display.
C．Oil paintings: The Wanfung Art Galley will host a joint show of oil paintings by 10 young and middle-aged artists. On display are more than 30 of their latest works, which capture（捕捉） the wonderous variety of life in unique（独特的） styles.
D．Literature Museum: The Nation Museum of Modern Chinese Literature offers an indepth study of the evolution of Chinese contemporary literature form 1919 to 1949.E. Concerts: Beijing rocks: "The Fashionow Night of Chinese Rock" is set to bring rock fans out by the thousands next month. Nine Chinese rock bands will perform at the concert, including older generation bands, middle generation and some recent arrivals. The audience will be given a chance to decide what songs they want to hear, which is sure to bring a storm.
F. Belgium Orchestra (管弦乐队): La Petite Band, the Baroque Orchestra of Belgium will perform in Beijing at the Grand Theatre of the Cultural Palace of Nationalities as part of activities across the world to commemorate（纪念） the 250th anniversary of Bach's death.
的金属棒ab放在圆环上，以速度
向左匀速运动，当ab棒运动到图示虚线位置时，金属棒两端电势差为（ ）
； C、
； D
．
向左运动到图示虚线位置时，根据公式可得产生的感应电动势为
，而它相当于一个电源，并且其内阻为
；金属棒两端电势差相当于外电路的端电压．外电路半个圆圈的电阻为
．