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5 Write the correct form of the adjective in the space.

27 The engine of the __________ (heavy) motorbike in the world weighs 1.8 tonnes.

28 Some drivers don’t like diesel engines because they are __________ (noisy) than petrol engines.

6 Write the correct form of the verb in brackets.

29 Today, many skyscrapers in Japan __________ (build) using flexible concrete to resist earthquakes.

30 The water in the radiator is cooled by the fan, which __________ (drive) by the engine.

31 A detailed investigation __________ (carry out) after every accident or near miss which takes place in or near the airport.

32 The car engine drives the fan, which then __________ (cool) the water in the radiator.

Section 3: Reading

7 Read this text. Match the headings in the box to the paragraphs.

Write a letter (A – H) in each space.

A Installing the casing pipe

B Attaching the reamer

C Drilling the pilot hole

D Widening the pilot hole

E The purpose of HDD

F Stages in the HDD process

G Main components

H Function of components

Horizontal Directional Drilling (HDD)

33 _____

Horizontal Directional Digging is used by the oil and gas industry for installing casing pipes under rivers or other obstacles.

34 _____

The equipment consists of a portable rig, a drill string, a cutter, a reamer, and a casing pipe.

35 _____

The job of the portable rig is to provide power for the drilling operation. The rig is attached to the drill string, the cutter and the reamer. The drill string transmits a rotating movement to the cutter. The purpose of the cutter is to make the pilot hole. The function of the reamer is to widen the small hole to the correct diameter.

36 _____

There are four main steps involved in horizontal directional digging. Let’s look at these four steps one by one.

37 _____

First, a small pilot hole is made using the drill bit on the end of the drill string. The drill bit completes the pilot hole and exits from the other side.

38 _____

Next, the cutter is removed from the drill string and the reamer is fixed to it.

39 _____

The drill string with the reamer attached is then pulled back through the pilot hole. As the reamer moves backwards through the hole, it increases the diameter of the hole.

40 _____

Finally, the drill string pulls the casing pipe through the hole, and the tunnel is completed.

Section 4: Writing

8 Complete Del’s e-mail.

Ben,

Thanks for your e-mail yesterday asking me to test the three generators (Models A, B and C) and to write you a brief report.

The detailed results are in the attached chart, but here is a summary of the main comparisons:

  • Power: B is more powerful than A, but B is (41) ______________________________ C.

  • Weight: Model C is (42) ____________________ the three.

  • Noise: The (43) __________ model is B, and the (44) __________ noisy model is C.

  • Exhaust: A gives out the (45) __________ exhaust. B produces (46) __________ exhaust than C.

  • Price: The (47) __________ model is A. B is slightly (48) __________ C.

Rgds, Del

Attachment to Del’s e-mail:

Model A

Model B

Model C

Power

8 kW

9 kW

10 kW

Fuel

Petrol

Diesel

Diesel

Voltage

110 V

220 V

110 V

Portable?

No

No

Yes

Weight

15 kg

22kg

13 kg

Noise

noisy

very noisy

quiet

Exhaust

a lot

some

almost none

Price

£55

£68

£72