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问题 单项选择题

亲和层析的基本原理是（）

A.离子交换

B.分子筛作用

C.利用大分子的生物学特异性来纯化该大分子物质

D.吸附平衡

E.分配平衡

答案

参考答案：C

解析：亲和层析是利用待分离组分和它的特异性配体间具有特异性亲和力，从而达到分离的目的。

单项选择题

以下关于房地产企业进行土地增值税清算时相关问题处理正确的是（）。

A.土地增值税清算时，未开具发票或未全额开具发票的，以税务机关核定的金额确认收入

B.房地产企业用建造房产安置回迁户的，安置房不属于视同销售，应直接确认为拆迁补偿费

C.房地产开发企业逾期开发缴纳的土地闲置费可以扣除

D.纳税人按规定预缴土地增值税后，清算补缴的土地增值税，在主管税务机关规定的期限内补缴的，不加收滞纳金
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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.

19.（）
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