已知A=3x2-5x+1,B=2x+3x2-5,求A-B的值.
A-B=(3x2-5x+1)-(2x+3x2-5)
=3x2-5x+1-2x-3x2+5
=-7x+6.
My brother wants to go on vacation. [ ]
A. somewhere peaceful
B. dangerous somewhere
C. somewhere boring
D. fascinating somewhere
当土地证书和土地登记卡内容不一致时,( )
A.以土地登记卡记载内容为准
B.以土地证书记载内容为准
C.以上级土地行政主管部门裁决为准
D.应重新调查审核