JLPT Listening

I'll be taking the jlpt for the first time in December and I am a little bit scared of the listening part as this is my weakness. Question: do they repeat the recording? I have a little trouble of getting everything only hearing it once. Specially numbers... also any other suggestion to get better at listening in 2 weeks will be helpful. I have been doing the genki listening exercises and as there are questions related to what I heard it has been a good exercise.