单项选择题
A．black-market furs B．managers' office C．chemical laboratories D．clothing stores
A．buyers buy the clothes without labels B．clothing stores sell cheap dresses C．all the products have labels D．labels are not true
A．A T-shirt seldom carries a label. B．A fur coat with a high price often carries a false label. C．A label only says what material the product is made of. D．Not all buyers know the materials they are buying.