题目

The population of China is than the population of Japan. A . many times as much as B . a lot of bigger C . many times larger 答案：C甲、乙、丙、丁是四个形状体积都相同而材料不同的球体，它们在水中静止的情况如图所示，其中所受浮力最小的是（　　）A．甲B．乙C．丙D．丁