IELTS Reading main_idea Practice

Choose the correct heading for paragraphs B, C, D and E from the list of headings below. Which heading best summarizes Paragraph C?

Question type: matching headings · Difficulty: beginner

1. A. A modern approach using pressure and membranes
2. B. Key benefits making new technology popular
3. C. The high energy cost of early desalination techniques
4. D. A national case study in water independence

Explanation Preview

Paragraph C introduces Reverse Osmosis (RO) and explains that it is a 'pressure-based process' that uses a 'special semi-permeable membrane'. This description perfectly matches the heading 'A modern approach using pressure and membranes'.

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