练习扔铅球的动作时，宜采用的练习方式是( )。
A．心理练习
B．整体练习
C．区组练习
D．分配练习
参考答案：B
You have made a few mistakes in your composition but _______ you have done well.
A．on the whole
B．first of all
C．on the other hand
D．in a word
液压电梯
