A.It was a heavy old teletype machine.
B.It was a small old teletype machine.
C.It was a new PC with a wireless mouse.
D.It was a second-hand tablet PC.
A.In the areas of communication, knowledge and relationships.
B.In the areas of transportation, communication and education.
C.In the areas of medicine, education and technology.
D.In the areas of food, clothing and other basic needs.