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问题 选择题
已知关于x，y的方程组
2x+y=1-
m
4
x-2y=
-3-8m
4
的解满足3x-1＜y，则m的取值范围是（　　）
A．m＜-
1
3
B．m＞-
1
3
C．m＜-
2
3
D．m＞-
2
3
答案

原方程组整理得，

8x+4y=4-m…①
4x-8y=-3-8m…②
，

①×2+②得，20x=5-10m，

得，x=

1-2m
4
，代入①得，

y=

2+3m
4
，

∴

1-2m
4
×3+
2+3m
4
＜1，

解得，m＞-

1
3
．

故选B．

单项选择题

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75（）

A．male

B．pole

C．role

D．rule
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单项选择题

在登记库存商品、原材料等明细账时应采用的账页格式是( )

A．多栏式明细账
B．三栏式明细账
C．数量金额式明细账
D．两栏式明细账
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