1. UNDO is a command on a computer that cancels the [following or previous?] action.
2. [Black or white?] surfaces absorb heat from the sun.
3. A child's intelligence develops [rapidly or slowly?] between the ages of four and five.
4. IBM is continuing to cut costs in an effort to be [more or less?] competitive.
5. Gas and oil consumption always [increases or decreases?] in cold weather.
6. Videophones are still too [expensive or cheap?] for the average consumer.
7. People of [older or younger?] generations often have a hard time with computers.
8. The laptop has a [weight or storage capacity?] of just 4 kilos.
9. Digital cameras have [manual or automatic?] functions.
10. This particular computer will cost you around $1,000 but that is just an [approximate or exact?] estimate.
11. Main memory only stores information while the computer is switched [on or off?] and it has a [limited or unlimited?] capacity.
12. An intelligent person has a [high or low?] level of mental ability and is [good or bad?] at understanding ideas and thinking clearly.