财政收入是国家通过一定的形式和渠道集中起来的。我国征收面最广、最稳定可靠的财政收入形式是( )
A.税收收入
B.利润收入
C.债务收入
D.其他收入
答案:A
(2013·皖南八校第一次联考)He is only too ready to help others, seldom, ________, refusing them when they turn to him.
A.if never
B.if ever
C.if not
D.if anything