A same meaning or not problem:
The system uses a mixture of underground and elevated stations and has standard gauge .
The system uses a mix of underground and elevated stations and has standard gauge .
****
[A]: yes

A same meaning or not problem:
SAfm was the first radio station of the SABC and the country 's first public radio station .
SAfm was the SABC 's first public radio station , and the country 's first radio station .
****
[A]: no

A same meaning or not problem:
These old rites are still performed in contemporary Sri Lanka , but the preserved songs are rarely performed by folk musicians .
These ancient rites are rarely performed in contemporary Sri Lanka , but the preserved songs are still performed by folk musicians .
****
[A]: no

A same meaning or not problem:
The fully completed action plan , published on 3 March 2006 , is placed directly in the hands of ministers by other members of the task force .
The completed action plan , published on 3 March 2006 , will be placed by ministerial members of the Task Force directly in the hands of other ministers .
****
[A]:
no