问题
单项选择题 B型题
酸碱内稳正常中（）
A.AB＞SB
B.AB＜SB
C.AB、SB均正常
D.AB、SB均低于正常
E.AB、SB均高于正常
答案
参考答案：C
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酸碱内稳正常中（）
A.AB＞SB
B.AB＜SB
C.AB、SB均正常
D.AB、SB均低于正常
E.AB、SB均高于正常
参考答案：C
Mr Clarke works in a middle school. He likes reading and often 1 some books from the library. He keeps 2 to the radio every morning and reading 3 after supper. So he knows much and teaches well. His 4 worship（崇拜）him very much. Mike, Mr Clarke’s little son，is only nine. He 5 likes reading books. And he often asks his father some questions. Mr Clarke always thinks he’s too 6 to understand him and chooses_ 7 ones to answer. Of course the boy is not satisfied with（对…满意）it． One day Mike read 8 about the electric lights（电灯）and was 9 it．When his father told him to do some housework，he went on thinking of it．He asked him 10 questions，and his father answered all．Then his father said proudly，“Fathers always know 11 than sons!”The boy thought for a while and said，“ 12 !” “Oh? Why?” Mike didn’t answer and asked， 13 ，“Who invented the electric lights?” “ 14 .”answered Mr Clarke． “Why didn’t his father invent them，then?” Looking at his son，Mr Clarke didn’t know 15 to answer !
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