Japan’s economy _______ in the past twenty years. No one knows how long it ______ before it regains its increase.

A．has been declining; will be

B．has declined; would be

C．had been in decline; would take

D．was on the decline; will take

通过大量研究得知，甲、乙两地甲型肝炎病人构成，甲地为76%，乙地为24%，则可认为（）

A.甲地甲型肝炎发病率高

B.乙地甲型肝炎发病率高

C.甲地甲型肝炎发病人数多于乙地

D.乙地甲型肝炎发病人数多于甲地

E.不能进行任何比较