More and more students are going to have Friday afternoons________ to volunteer and help others.

A．at

B．in

C．on

D．off

近几年我国数次上调了个税起征点。提高个人所得税起征标准，将有利于

A．调节个人收入，实现社会公平

B．增加财政收入

C．完善我国的社会保障制度

D．抑制过高收入