Broadcast media that transmit audio and images electronically include radio and television. Print media are static means of advertising purchased in units of area; broadcast media are dynamic means of advertising distribution purchased in units of airtime. Messages in broadcast media affect the emotions of viewers and listeners for a few moments, and then disappear. Thus, they are fundamentally different from reports in the print media, which have a long period of existence and can be re-read many times.
1. Most of us use public transport to get to work.
Public transport is used bu us to get to work.
2. Within 5 years, the railway was carrying over 7 million passengers annually.
Within a few years, over 7 million passengers annually was being carried by the railway.
3. Engineers have greatly improved the safety of railroad cars over years.
The safety of railroad cars has been greatly improved by engineers over years.
4. Werner von Siemens constructed the first electric locomotive.
The first electric locomotive was constructed by Werner von Siemens.
5. Railroads are increasingly adopting long welded rails.
Long welded rails are being increasingly adopted by railroads.
