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A:catch up with
B:come up with
C:make up
D:set up
某工程的工序流程如图所示(工时单位:天),现已知工程总时数为10天,则工序c所需工时为( )
改革开放以来,一家三代的交通工具发生了变化(如下图)。从这个变化中,我们可以感受到( )
连词成句