The new technological revolution on American newspapers has brought increased ______, a wider range of publications and an expansion of newspaper jobs.

A．Animals can serve people in many ways.
B．The difference between trained dogs and normal ones.
C．Man made use of animals long ago.
D．Animals can bring pleasure to human beings.

A．It was warmly welcomed.
B．People could understand the action.
C．They had some doubt about it.
D．They were indifferent to such a move.