Yes, you can use the information in the passage to infer the meaning of unfamiliar words in the Reading section.

The Reading section of the IELTS test often includes passages on a variety of topics, including science, history, literature, and more. These passages may contain unfamiliar words that you have not encountered before. However, with careful reading and using the context clues provided in the passage, you can often infer the meaning of these unfamiliar words. Here's how you can do it:

1. Analyze the context: When you come across an unfamiliar word, read the surrounding sentences and paragraphs to understand the context in which the word is used. Look for clues such as synonyms, antonyms, or examples that can help you understand the meaning of the word.

2. Look for definition clues: Sometimes, the passage may directly provide a definition or explanation of the unfamiliar word. Look for phrases like "also known as," "which means," or "in other words" that may precede or follow the word, as these can help you understand its meaning.

3. Consider word formation: Pay attention to the word formation of the unfamiliar word. Is it a noun, verb, adjective, or adverb? This can give you a clue about its meaning. For example, if the word ends in "-tion," it is likely a noun.

4. Use synonyms and antonyms: Look for words in the passage that have similar or opposite meanings to the unfamiliar word. By understanding the relationship between these words, you can infer the meaning of the unfamiliar word.

5. Use knowledge of prefixes and suffixes: If the unfamiliar word contains a prefix or suffix that you are familiar with, you can use that knowledge to infer its meaning. For example, the prefix "un-" usually indicates the opposite or negation of the word.

6. Make educated guesses: If you have tried all the above strategies and still cannot determine the meaning of the unfamiliar word, make an educated guess based on the context and your overall understanding of the passage.

By employing these strategies and actively engaging with the passage, you can successfully infer the meaning of unfamiliar words in the Reading section of the IELTS test. Practice these skills during your preparation to enhance your reading comprehension and vocabulary skills.