The allowance is only enough to________the most fundamental needs such as food and clothing.
A:convey
B:cover
C:consist
D:confirm
①都属于违法行为 ②都对社会有危害性 ③都要负法律责任 ④都应受到刑罚处罚
把代数式3x3-6x2y+3xy2分解因式,结果正确的是( )