[单选题]小便不畅，点滴不出者为（ ）
A. 癃
B.水肿
C.遗尿
D.闭
E.淋证

{{B}}Economizing of the Poor{{/B}}
{{B}}Comprehending Economizing of the Poor{{/B}}
Walking down the aisles of a supermarket, low-income shoppers must consider a number of factors including quantity, price, quality and nutritional differences when selecting food products. Food-purchase decisions by the poor often entail balances among taste, preference and quality factors— either real or perceived — to meet spending constraints. Within broad product categories such as cereal, cheese, meat and poultry, and fruits and vegetables, shoppers can choose among many substitutable products. Low-income shoppers can extend their food dollars in a number of ways. They may shop in discount food stores; they may purchase and consume less food than higher-income shoppers; they may purchase low-priced (and possibly lower quality) food products; or they may rely on some combination of all three. A bett