I've said before that IELTS Reading is a vocabulary test. If you don't understand the words that you read in the questions or passage, you probably won't get the right answer. Here's an example from one of my video lessons:
Is the following statement true, false or not given?
Some sewage networks built by the Romans in the UK were made out of wood.
Relevant part of the passage:
Roman towns and garrisons in the United Kingdom between 46 BC and 400 AD had complex sewer networks sometimes constructed out of hollowed-out elm logs.
- What answer would you give (T, F or NG)?
- Which 'keywords' would you underline in the question and passage?
- Which words do you need to understand in order to get the answer?