第二章测试1.What is the most common cause of recurrent or persistent cough in children？（ ）。
A:Airway reactivity (asthma) B:Drainage from upper airways C:Hypersensitivity pneumonitis D:Aspiration
答案:A
2.What are NOT the common causes of acute stridor in children? （ ）。
A:Foreign body aspiration B:Croup C:Congenital anomalies D:Trauma
答案:C
3.Which of the following are the indicators of serious chronic lower respiratory tract disease in children？（ ）。
A:Failure to grow B:Acute fever C:Clubbing of the digits D:Hemoptysis
答案:ACD
4.Stridor is most commonly observed in children with asthma.（ ）
A:对 B:错
答案:B
5.Normal chest X-ray shows a gas shadow below the right hemidiaphragm, which is a gastric bubble.（ ）
A:对 B:错
答案:B
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