圆压圆式凸版两色印刷机的传动系统，主要由电机、（）机、传动装置组成。
A.减速
B.变速
C.印刷
D.切割
参考答案：A
读拼音，写同音字。
yì 战( ) 刚( ) 造( ) 友( )
翻( ) 瘟( ) 压( ) ( )鸟
mò 寂( ) 隐( ) ( )生 沙( )
( )非 ( )汁 ( )端 沉( )
They were ahead during the first half of the match, but they ________ in the last five minutes．
A．were beating
B．beat
C．were beaten
D．had been beaten
