【多选题】呼气性呼吸困难的主要特点有
A.
由于肺泡弹性减弱或(和)小支气管痉挛和炎症所致
【单选题】Many people agree that there has never been a more splendid opening ceremony than _______ of the Guangzhou Asian s in history.
【判断题】《曹全碑》的内容为王敞记述曹全生平。()
【单选题】----- The opening ceremony has already started. ------Look! The flag is _______ now.