The committee is discussing the problem right now．It will _____ have been solved by the end of next week．

A．eagerly

B．hopefully

C．immediately

D．gradually

我国发生的严重急性呼吸综合征（SARS），很快波及到许多省市，这种发病情况称为（）。

A.暴发

B.季节性升高

C.流行

D.周期性流行

E.长期变异