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老李，50岁，农民。嗜酒多年，长期以玉米为主食。最近发现其面部和手背均出现皮疹，有些部位出现糜烂和结痂。他怀疑自己缺乏烟酸。

如想对其烟酸营养状况进行综合判定和评价，可从哪些方面进行？

答案

参考答案：

评价方法：

①膳食中烟酸摄入量的调查和计算；

②烟酸缺乏症状的询问和体征的检查：皮疹观察，消化道症状，精神与神经症状

③生化检查：如尿负荷试验等，测定尿中NMN的含量

④综合分析所获得的资料并作出判断

选择题

Tom has _____________ shoes for Jack.[ ]

A. a pair

B. two pairs

C. a pair of

D. two
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单项选择题

In the United States, older people rarely live with their adult children. But in many other cultures children are expected to care (1) their aged parents. In some parts of Italy, the percentage of adult children who (2) with their parents (3) 65 to 70 percent. In Thailand, too, children are expected to take care of their elderly parents; few Thai elderly live (4) . What explains these differences in living arrangements (5) cultures Modernization theory (6) the extended family household to low levels of economic development. In traditional societies, the elderly live with their children in large extended family units for economic reasons. But with modernization, children move to urban areas, leaving old people (7) in (8) rural areas. Yet modernization theory cannot explain why extended family households were never common in the United States or England, or why families in Italy, which is fully modernized, (9) a p tradition of intergenerational living. Clearly, economic development alone cannot explain (10) living arrangements. Another theory associated intergenerational living arrangements with inheritance patterns. In some cultures, the stem family pattern of inheritance (11) . (12) this system, parents live with a married child, usually the oldest son, who then (13) their property when they die. The stem family system was once common in Japan, but changes in inheritance laws, (14) broader social changes brought (15) by industrialization and urbanization, have (16) the (17) .In 1960 about 80 percent of Japanese over 65 lived with their children; by 1990 only 60 percent did-a figure that is still high (18) U.S. standards, but which has been (19) steadily. In Korea, too, traditional living arrangements are (20) : the percentage of aged Koreans who live with a son declined from 77 percent in 1984 to 50 percent just 10 years later. Although most elderly Koreans still expect to live with a son, their adult children do not expect to live with their children when they grow old.

11（）

A.controls

B.overtakes

C.predominates

D.overwhelms
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