Ex a p 41 :
invention, computer, PCs, screens, laptop, printer, device, television, digital,
cassette tape, recharging, megapixels
Ex b p 41 ;
1. IBM has produced commercially successful printers since 1953/for about 60 years.
2. Printing has been around since 1440/for almost six hundred years.
3. TV sets have been common in houses since the 1960s/for more than 50 years.
4. The f rst microwave oven appeared in homes about 47 years ago.
5. Cameras have been on the market for more than 126 years/since 1888.
6. People have had cell phones for about 44 years.
**listening , page 44;
1. Fahad has walked for exercise since he had his heart problem.
2. Fahad has had his new job for six months.
3. Saeed has been married for almost a year.
About conversation page 45:
1. They haven’t seen each other for f v e years/since high school.
2. Adnan hasn’t changed at all, but Fadi looks more serious.
3. Fadi is working in a bank.
4. Fadi has worn a suit since he started working.
5. Adnan has been married for about a year.
Reading , page 47;
Ex, a
1. d
2. f
3. e
4. b
5. a
6. c
Ex b ,
1.Audiences have watched movies since 1895/for more than 115 years.
2. The “stop trick” was discovered by accident.
3. A small model of a gorilla was used, but in the f lm it looked large.
4. They used a computer-controlled camera to create scenes with more realistic motion.
5. Jurassic Park, Lord of the Rings, Toy Story, and Avatar.
6. Write your own answer.
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