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问题 选择题

在密闭容器中，下列反应已达平衡：aA（气）+bB（气）cC（气）+dD（气）+Q如果升高温度或降低压强，则C（气）的物质的量都增大，试判断下列各组关系，哪组是正确的

答案

A 

升高温度，C物质的量增大，平衡向右移动，正反应为吸热反应。Q＜0。降低压强，C物质的量增大，平衡向右移动，即向气体体积增大方向移动，a+b＜c+d。综上所述A为答案。

单项选择题 A1/A2型题

靶形红细胞多见于 （）

A.珠蛋白生成障碍性贫血

B.巨幼细胞贫血

C.骨髓纤维化症

D.溶血性贫血

E.理化损伤
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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.

4（）

A.lone

B.alone

C.lonesome

D.lonely
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