It matters little _______ a man dies, but ______ matters much is ________ he lives.

A．how; what; how

B．how; it; how

C．why; it; why

D．that; what; that

复发性疱疹性口炎的临床特征是

A．增生性菜花状溃疡
B．唇周皮肤先有红斑，随后出现密集小水疱
C．口腔病损呈多形性改变如红斑、水疱、糜烂、渗出等，皮肤有虹膜状红斑
D．充血糜烂面上覆灰黄色膜
E．散在圆形或椭圆形溃疡，溃疡中央凹陷、周围有狭窄红晕，疼痛明显