.Unit 6 in book 4Part One Listening,Understanding and SpeakingListening 1Ex 1: 3,5,6,8,10Ex 2: four, 6.9, 5.1, doubly, far moreScripts: Husband: Oh! Its unbelievable! Wife: Whats the matter? Husband: The article says that lifespan varies according to race, income level and whether you are male or female. Now, can you guess which is the most important factor? Wife: Hmm, I think it might be the sex. Husband: Thats right! My gr