Miss Green is my neighbor(邻居). She 1 at a post office and she meets lots of people2.She is 3 to everyone and likes to help others. She is over fifty years old, 4 she looks very young (年轻）.She is of 5 height and thin. She has long, curly, brown 6.She likes to wear a red T-shirt and jeans. She 7like a movie star. She really likes 8 shopping on weekends and she always buys many beautiful clothes. She always9,“Old people still want 10 beautiful!”People all like her very much.

图（甲）为小型旋转电枢式交流发电机的原理图，其矩形线圈在匀强磁场中绕垂直于磁场方向的固定轴OO′匀速转动，线圈的匝数n=100、电阻r=10Ω，线圈的两端经集流环与电阻R连接，电阻R=90Ω，与R并联的交流电压表为理想电表．在t=0时刻，线圈平面与磁场方向平行，穿过每匝线圈的磁通量Φ随时间t按图17（乙）所示正弦规律变化．求：