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问题 单项选择题 A1/A2型题

下列关于体内酸碱代谢失调时的叙述，错误的是（）

A.代谢性酸中毒、代谢性碱中毒，临床上均可有血钾过低

B.代谢性酸中毒、代谢性碱中毒，临床上均可有（HCO-3）的升高

C.代谢性酸中毒、呼吸性酸中毒，临床上均可有pH下降

D.代谢性碱中毒，呼吸性酸中毒，临床上均可有PaCO2CP的升高

E.代谢性酸中毒、呼吸性碱中毒，临床上均可有（HCO-3）下降

答案

参考答案：B

解析：

代谢性酸中毒时，血pH下降，HCO-3下降。代谢性碱中毒时，血气分析示：失代偿时，血液pH和HCO-3值升高，PaCO2正常；部分失代偿时，血液pH、HCO-3和PaCO2均增高。故答案应选B。

单项选择题

肝硬化腹水的治疗，每次放腹水量应是

A．1000～1500ml
B．2000—3000ml
C．3000～4000ml
D．4000～5000ml
E．5000ml以上
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单项选择题

In the United States, the first day nursery was opened in 1854. Nurseries were established in various areas during the (91) half of the 19th century; most of (92) were charitable. Both in Europe and in the U. S. , the day-nursery movement received great (93) during the First World War, when (94) of manpower caused the industrial employment of unprecedented numbers of women. In some European countries nurseries were established (95) in munitions (军火)plants, under direct government sponsorship. (96) the number of nurseries in the U.S. also rose (97) , this rise was accomplished without government aid of any kind. During the years following the First World War, (98) , Federal, State, and local governments gradually began to exercise a measure of control (99) the day nurseries by (100) them and by inspecting and regulating the conditions within the nurseries.
The (101) of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were (102) called upon to replace men in the factories. On this (103) the U. S. government immediately came to the support of the nursery schools, (104) $6,000,000 in July, 1942, for a nursery school program for the children of working mothers. Many States and local communities (105) this Federal aid. By the end of the war, in August, 1945, more than 100,000 children were being cared (106) in day-care centers receiving Federal (107) Soon afterward, the Federal government (108) cut down its expenditures for this purpose and later (109) them, causing a sharp drop in the number of nursery schools in operation. However, the expectation that most employed mothers would leave their (110) at the end of the war was only partly fulfilled.

A．again

B．thus

C．repeatedly

D．yet
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