Since production has risen the personal income has increased year by year.A. steadilyB.

问题补充：

Since production has risen , the personal income has increased year by year.

A. steadily

B. fortunately

C. particularly

D. variety

答案：

(答案→)A. steadily

B. fortunately

C. particularly

D. variety

解析：考查副词辨析。A稳定地；B幸运地；C专门地；D不同种类。句意：因为产量在稳定上升，人们的收入在逐年增加。根据句意所以选A。