关于哮喘持续状态的临床表现，正确的叙述是（） A.发绀、呼吸困难，经吸氧可缓解 B.
题型：单项选择题
问题：
关于哮喘持续状态的临床表现，正确的叙述是（）
A.发绀、呼吸困难，经吸氧可缓解
B.PaO2下降，PaCO2下降
C.无奇脉
D.可听到股动脉枪击音
E.呼吸音减弱或消失
题型：单项选择题
根据短文内容，从A,B、C、D四个选项中，选出可以填人空白处的正确答案。  Look at this boy. 1 name is Nick. His 2 is May 1st. He was born in 1997. He is 3 years old. Jack 4 his friend. He is 5 English boy. They 6 students. They are in the same school. Miss Li is their 7 . She is 8nice teacher. She 9 them. They like 10, too.
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