The listening paper checks that you can understand what people are talking about, even when they use regional accents and colloquial English. You should also be able to understand particular important details, even if you do not understand everything. Sometimes you will not be told some of the details but you must understand them from the other information you have been given. The texts will be radio interviews, telephone calls, advertisements, lectures, and conversations, amongst other things. You will hear different accents, and sometimes noise in the background, though this will not interfere with the test.
There are four papers in the test, and you hear each part twice. In the first part you hear eight separate short pieces and you have to answer one question for each. In the second you hear a longer talk, perhaps a radio programme or an interview, and you must answer eight questions about it. The next part has ten questions. You will have to take notes about specific information that you hear - for example if you are getting flight information, you may be asked where and when a particular plane leaves. Part 4 has true false, or doesn't say type questions, (or choose A, B, or C) and is often in the form of a conversation, though it may not be. There are seven questions in this part.