a) Listen to the sounds. Imagine the scene. What can you see, hear, smell?
This question requires listening to sounds and imagining the scene. Since I cannot listen to sounds, I will have to base my answer on common London sounds:
b) Read the title and the subheadings What is the text about?
The text is about different ways to get around in London:
The text will likely describe each mode of transport, provide information about them, and possibly offer reasons why people might choose to use them.