从A，B，C，D四个选项中，找出其划线部分与所给单词的划线部分读音相同的选项。

1．constant

A．arise                   B．rose                    C．salesman             D．expense

2．data

      A．brand                  B．message              C．radium                D．appoint

3．country

      A．tough                  B．route                   C．nervous               D．discount

4．junior

      A．culture                B．bonus                  C．abuse                  D．flu

5．machine

      A．chew                  B．moustache           C．chemist               D．Christmas