Fire is dangerous and we must __________ children away _________ it.

A．stop; from

B．keep; from

C．prevent; to

D．keep; to

左心功能不全、肺循环淤血的主要临床表现，下列哪项不正确

A．咳嗽、咯痰，痰为浆液性，呈白色泡沫状

B．劳力性呼吸困难，休息即缓解

C．肺微小动脉压增高，血浆外渗，痰内带血丝

D．阵发性夜间呼吸困难

E．支气管痉挛，发作性哮喘