题目

阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项。Does Fame Drive You Crazy?Although being famous might sound like a dream come true, today's star, feeling like zoo animals, face pressures that few of us can imagine. They are at the center of much of the world's attention. Paparazzi (狗仔队) camp outside their homes, cameras ready. Tabloids (小报) publish thrilling stories about their personal lives. Just imagine not being able to do anything without being photographed or interrupted for a signature.According to psychologist Christina Villareal, 已知圆周率π、引力常量G、月球中心到地球中心的距离r和月球绕地球运行的周期T，认为月球绕地球的轨道为圆形轨道．仅利用以上数据，可以估算出的物理量有 A． 月球的质量 B． 地球的质量 C． 月球绕地球运行加速度的大小 D． 月球绕地球运行速度的大小