[听力原文]W: How long does it take you to drive home when there is not much trafficM: Normally about fifty minutes, but if I can’t leave my office before 5 p. m., it usually takes me 25 minutes more.Q: How long will it take the man to drive home at rush hour（） A: Twenty-five minutes. B: An hour and a quarter. C: Forty minutes. D: Fifty minutes.