单选题
阅读下面的短文，文中有15处空白，每处空白给出4个选项。请根据短文的内容，从4个选项中选择1个最佳答案。

The producers of instant coffee found their product strongly resisted in the market places despite their obvious advantages. Furthermore, the advertising expenditure for instant coffee was far greater than that for regular coffee. Efforts were {{U}}(51) {{/U}} to find the cause of the consumers' seemingly unreasonable {{U}}(52) {{/U}} to the product. The reason given by most people was {{U}}(53) {{/U}} for the taste. The producers suspected that there might be {{U}}(54) {{/U}} reasons, however. This was confirmed by one of motivation research's classic studies, one often cited in the trade. Mason Haire, of the University of California, {{U}}(55) {{/U}} two shopping lists that were identical except for one item. There were six items common to both lists: hamburger, carrots (胡萝卜), baking power, bread, canned peaches and potatoes, {{U}}(56) {{/U}} the brands or amounts specified. The seventh item, in the fifth {{U}}(57) {{/U}} both lists, read "1 lb. Maxwell House coffee" on one list and "Nescafe instant coffee" on the {{U}}(58) {{/U}}. one list was given to each person in a group of fifty {{U}}(59) {{/U}}, and the other list to those in an other group of the same {{U}}(60) {{/U}}. the women were asked to study their lists and then to describe as far as they could, the kind of woman ("personality and character") {{U}}(61) {{/U}} would draw up that shopping list. {{U}}(62) {{/U}} half of those who had received the list including instant coffee described a housewife who was laze and a poor planner. {{U}}(63) {{/U}}, only one woman in the other group described the housewife, who had {{U}}(64) {{/U}} regular coffee on her list, as lazy; only six of that group suggest ed that she was a poor lanner.. eight women felt that the instant-coffee user was probably not a good wife! No one in the other group {{U}}(65) {{/U}} such a conclusion about the housewife who intended to buy regular coffee.