题目

The Diet Zone: A Dangerous Place     Diet Coke, diet Pepsi, diet pills, no-fat diet, vegetable diet…… We are surrounded by the word “diet” everywhere we look and listen. We have so easily been attracted by the promise and potential of diet products that we have stopped thinking about what diet products are doing to us. We are paying for products that harm us psychologically and physically（身体上）.     Diet products significantly weaken us psychologically. On one level, we are not allowing our brains to admit that our weight problems lie not in actually losing the weight, 下列有关汉代长安“市”的说法，正确的是（    ）①与居民区隔开    ②有专门官员管理③又叫“草市”    ④开市、闭市有严格时间规定A．①②③      B．①③④       C．①②④      D．②③④