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问题 单项选择题 A1/A2型题

代谢性酸中毒完全代偿期可出现 （）

A.血pH和HCO-3降低，PCO2升高

B.血PCO2和HCO-3降低，pH升高

C.血pH正常，PCO2、HCO-3均降低

D.血pH和PCO2降低，HCO-3降低

E.血浆pH、PCO2、HCO-3均升高

答案

参考答案：C

解析：代谢性酸中毒完全代偿期血pH正常，由于机体代偿调节PCO2、HCO-3维持在低水平，[HCO-3]/［H2CO3]比值为20：1。

翻译题

句子翻译。阅读短文，翻译划线部分的句子。（共5小题，计10分）

If I could change one important thing in my hometown, 小题1:it would be the air pollution problem.Here are the reasons why I want to solve the problem.

小题2:第一原因是我希望我的家乡变成一座美丽的城市。 As an old industrial(工业的）city,my hometown has done a lot to help the country’s development .But at the same time,the environment of it has been badly destroyed.Its air quality(质量)is so bad. 小题3:It’s hard for people to see a blue sky during most time of the year.

Another reason is that my hometown’s development needs a clean environment to attract talent(吸引人才).Because the environment of my hometown is very poor,many local students who study out of it don’t want to come back after graduation(毕业).

Now people are paying more and more attention to their health.If the air pollution problem cannot be solve quickly, 小题4:人们不可能保持健康。

Luckily,lots of people in my hometown have realized how serious the problem is. 小题5:I’m  sure my hometown will become a clean and beautiful city in the future.
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单项选择题

下列缩写代表主要组织相溶性抗原的是

A．MHC
B．MHA
C．MHS
D．HLA
E．MPC
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