投掷项目的助跑形式可分为（）和（）两种。
参考答案：直线、旋转
She talked again and again to her friend about careful driving, but _______ just turned a deaf ear to her words．
A．another
B．other
C．others
D．the other
一个实心铅球的质量是4kg，经测量知道它的体积是0.5dm3．这个铅球是用铅做的吗？（已知铅的密度是11.3×103kg/m3）
