Câu hỏi và đáp án bài nghe Test 1 section 4 - IELTS Cambridge 14 - Cities built by the sea

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Question 31-40

Complete the notes below.

Write ONE WORD ONLY for each answer.

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Marine renewable energy (ocean energy)

Introduction

More energy required because of growth in population and 31 ______________________

What's needed:

• renewable energy sources
• methods that won't create pollution

Wave energy

Advantage: waves provide a 32 ______________________ source of renewable energy

Electricity can be generated using offshore or onshore systems

Onshore systems may use a reservoir

Problems:

• waves can move in any 33 ______________________
• movement of sand, etc. on the 34 ______________________ of the ocean may be affected

Tidal energy

Tides are more 35 ______________________ than waves

Planned tidal lagoon in Wales:

• will be created in a 36 ______________________ at Swansea
• breakwater (dam) containing 16 turbines
• rising tide forces water through turbines, generating electricity
• stored water is released through 37 ______________________ , driving the turbines in the reverse direction

Advantages:

• not dependent on weather
• no 38 ______________________ is required to make it work
• likely to create a number of 39 ______________________

Problem:

• may harm fish and birds, e.g. by affecting 40 ______________________ and building up silt

Ocean thermal energy conversion

Uses a difference in temperature between the surface and lower levels

Water brought to the surface in a pipe

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Section 4, Questions 31-40

31. industry
32. constant
33. direction
34. floor
35. predictable
36. bay
37. gates
38. fuel
39. jobs
40. migration