根据材料请回答 31～35 Here's a familiar version of the boy-meets-girl situation.A young man has at last plucked up courage to invite.a young lady to dinner.She has accepted his invitation.He is determined to take her to the best restaurant in town, even if it means that he will be short of money during the month to come.When they get to the restaurant, he finds that the girl is on a diet.She mustn't eat this and that.Oh, but of course, she.doesn't want to spoil his enjoyment, So she let him eat as much fattening food as he wants: it's the surest way to an early grave.They spend a truly memorable evening together and never see each other again. How miserable dieters are! You can always recognize them from the sad expression on their faces.They spend most of their time consulting calorie charts, gazing at themselves in mirrors and leaping on to weighing-machines in the bathroom.They spend a lifetime fighting a losing battle against spreading hips, protruding tummies and double chins.Some wage (作战，实行)an all-out war on FAT.Mere dieting is not enough.They exhaust themselves doing exercises, sweating in sauna' baths (桑拿浴), being massaged (按摩) by weird(不可思议的，离奇的) machines.Don't think it's only the middle-aged who go in for these fads(一时流行的风尚).Many of these bright young people are suffering from chron- ic malnutrition: they are tiring on nothing but air, water and the goodwill of God.Dieters starve themselves of their own free will; so why are they so miserable? Well, for one thing, they're always hungry.You can't be hungry and happy at the same time.All the horrible concoctions(调制品，混合物) they eat instead' of food leave them permanently dis-satisfied.And, Of course, they're always miserable because they feel so guilty.Hunger just proves too much for them and in the end they lash out and eat five huge cream cakes at a sitting.And who can blame them? At least three times a day they are exposed to tempta-tion.What a torture it is always watching others having piles of mouth-watering food white; you only have a glass of water! What' s all this self-inflicted (自我打击的) torture (催残) for? Saintly people deprive themselves of food to attain a state of grace.Unsaintly people do so to attain a state of misery.It will be a great day when all the dieters in the world abandon their slimming courses; when they hold out their plates and demand second helpings! 第 31 题 The best title for this passage is