题目内容（请给出正确答案）

[单选题]

Asthma is a refractory disease associated with chronic bronchial inflammation, whose syndromes are recurrent gasp, dyspnea, stuff chest of cough, then even orthopnea.

A.inhalation

B.exhalation

C.breathing

D.respirator

提问人：网友guadia 发布时间：2022-01-06

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· 有3位网友选择 C，占比30%
· 有3位网友选择 B，占比30%
· 有2位网友选择 D，占比20%
· 有2位网友选择 A，占比20%

ABCD

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