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9 Complete Ben’s questions about the generators.

49 A: Which model ________________________________________ of the three?

B: Model C. It uses 220 volts.

50 A: Which model __________________________________________________?

B: Model A. It produces 8 kilowatts

51 A: Which model __________________________________________________?

B: Model C. It only weighs 13 kilograms.

52 A: Which model __________________________________________________?

B: Model C. The other two models are not portable at all.

Variant 3

Section 1: Vocabulary

1 Write the correct word from the box in each space. You don’t need all the words.

aisle / submerged / evacuation / respiration / ramp / buoyant

1 Put on your lifejacket whenever you go on a boat. If you fall overboard the jacket will keep you __________.

2 The __________ between the two sections of the warehouse is very steep (at a 20 degree angle). When you drive the forklift truck down it, please drive slowly.

3 If the injured diver remains __________ below the surface of the water, inflate his jacket with air. This will make him rise to the surface.

4 After an electric shock, the casualty may stop breathing. If this happens, you have to give him artificial __________.

2 Complete the sentences, using words from the box. Change the form of the words in the box to fit correctly into the sentences.

For example: propel – propeller; calculator – calculating

stabiliser / circular / generate / triangle / transmit / hemisphere / receiver / semicircle

5 The moving parts of the car engine act as a __________ to provide electricity for the battery.

6 Cut an orange into two equal parts and they will both be approximately __________ in shape.

7 The small antenna on the roof of her car is for __________ radio signals from a satellite.

8 The four sides of the Egyptian pyramids have a __________ shape, but the base is square.

9 If the cycling robot hits a bump in the road, a special sensor __________ the bicycle and prevents it from falling.

10 The entrance to the road tunnel is almost __________ in shape.

11 The large dish on the right side of the satellite is the __________: it sends the signals to Earth.

12 The flag of Japan is a large red __________ in a white square.

3 Underline the correct word in brackets.

13 A four-wheel-drive (4 X 4) is a useful (device / specialist / vehicle / instrument) for driving on wet, sandy or rocky surfaces.

14 A theodolite is a precision (instrument / vehicle / process / specialist) which is used by surveyors for measuring the land.

15 The global positioning (or GPS) (device / instrument / vehicle / system) consists of at least three satellites connected to a hand-held receiver.

16 An X-ray technician is a (device / tool / specialist / system) who operates the X-ray machine in a hospital or clinic.

Section 2: Grammar