根据我国现行规定,土地增值税实行四级超率累进税率,对于增值额未超过扣除项目金额100%的部分,税率为( )。
A.60%
B.50%
C.40%
D.30%
参考答案:C
基底膜带透明层的主要成分是()
A.BPAG2
B.整合素
C.板层素及其异构体
D.亲和素
More has been learned about the Moon than any other of the Earth''s neighbors in space because of the Apollo program, which enabled men to walk on the Moon and bring back hundreds of pounds of________.
A.rocks
B.rock
C.stone
D.stones