The attitude of David Westin towards the present situation of big networks is______.

A．concentrate mainly on the range of morning time
B．conduct a detailed review to the whole elections
C．include nearly everything through its digital service
D．utilize its exclusive technology and facilities

A．the broadcast of Democratic events can bring large profits to the companies
B．not all of the four big broadcast networks will cover the GOP convention
C．the politicians think it's natural to ignore the public interests for them
D．our media culture is greatly influenced by those commercial advertisement