What can be found if a child with Ⅲ grade (levels) laryngeal obstruction?
- A: Stridor and dyspnea just can be found after activities with normal lung and heart sounds
- B: Exhaustion，lethargy，shallow （weak） breathing，pallor，silent lung，arrhythemia，weak heart sound
- C: Stridor and dyspnea
- D: Dysphoria，cyanosis，sweating，reduced lung sound，tachycardiac，inspiratory recess of soft tissue
- E: All of above are not correct
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