小江进行了如下测量：①用天平测石片的m质量．②往烧杯中甲适量水浸没石片，在水面位置作上标记，取出石片，用量筒取水缓慢倒入烧杯，让水面升至标记处，如图所示．量筒内倒出水的体积V即为矿石的体积．③计算出石片的密度ρ．根据以上步骤，测出的密度值会（　　）

    Bob comes from England. He is eleven. He likes to play basketball. His father Mr Brown works in a big shop in Shijiazhuang. Bob has a brother. His name is Mike. He is only four.

    It is Saturday. Bob's family are all at home. Mr. Brown is sitting on a chair and reading a book. Bob is cleaning his new bicycle. His brother is playing with his dog.