题目

Hi! My name is Jenny. I am a student in PEP Middle School in Hangzhou. And I have a friend, Bob at school. Do you want to know my family? Here is a photo of my family. These are my grandparents. They live(居住) in Shanghai now. This is my father. His name is Bill Smith. He is a teacher in No.4 Middle School. His phone number is 13857428849. This is my mother, Sally Smith. She works(工作) in a shop. She only sells(仅仅卖) rulers, pens, erasers, pencil boxes and notebooks. Her phone number is 15857499256. My mother is tidy, but my father isn’t. （  ）1. Jenny Smith is a student in __（2012?安顺）如图中的A，B，C，D分别是用照相机拍摄（每0.1s上拍摄一次〕的小球在四种不同运动状态下的照片，其中小球受到平衡力作用是（　　）A．B．C．D．