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问题 选择题
已知P={-
2
，0，1}，Q={x|-1≤x≤1}，则P∩Q=（　　）
A．{-
2
，0，1}		B．{0，1}C．∅D．{0}
答案

∵P={-

2
，0，1}，Q={x|-1≤x≤1}，

∴P∩Q={0，1}．

故选B

单项选择题

假定某通信企业只提供两项通信业务，分别为业务1、业务2，经过成本分析和归集，该企业在一年内的固定成本总额为F，该成本为提供这两种业务的公区成本。两项业务的变动杨本总额分别a1、a2，在这一年中，两项业务的业务量分别为q1、q2.

如果成本分摊比例k1、k2的计算公式为k1=a1/（a1+a2）、k2=a2/（a1+a2），由这种分摊公共成本的方法称为（）。

A．总收入法

B．归属成本法

C．平均成本法

D．相关产量法
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填空题

B Egyptian Villages 埃及村落

Most of the inhabitants live in mud-brick homes, their (1)  walls insulating against the afternoon heat. Flat roofs, exposed (2)  the northern evening breezes, serve as cool sleeping (3)  as well as storage areas. Villagers plaster the outer walls (4)  often trim them in blue, a color they believe (5)  off the evil eye. As a man becomes richer, (6)  can add a second story to his house perhaps (7)  his married son. Those villagers who have made the (8)  to Mecca paint the legend of their trip on (9)  outer walls of their homes. Such hajj houses, along (10)  the mosques, are the most distinguished buildings in a (11)

Some villagers build ornate pigeon coops close to their (12) , using the birds as food and their droppings to (13)  crops. Many houses still have dirt floors and lack (14)  or running water; women with jars balanced on their (15)  make the trek to the community well, and children donkeys haul the (16)  liquid in jerry cans.

All (17)  said, government sponsored building programs have also brought newer (18)  residences and utilities to some villages, particularly those outside (19)  Nile Valley in the Oases and the Red Sea (20)  areas.

14.（）
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