局域网的功能主要在于（），通常采用“客户机-服务器模式”。

患者大便秘结，不甚干结，便而不畅，胸胁痞满，甚则腹中胀痛，嗳气，食少，苔薄腻，脉弦。治疗上应首选

A．麻子仁丸

B．保和丸

C．润肠丸

D．柴胡疏肝散

E．六磨汤

（8分）一包粉末可能含有K⁺、Fe³⁺、Al³⁺、Cl^－、SO₄^2－、CO₃^2－中的若干种，现进行以下实验：

（1）取少量固体，加入稀硝酸搅拌，固体全部溶解，没有气体放出；

（2）向（1）所得溶液中加入一定量Ba(OH)₂溶液，生成有色沉淀，过滤后在滤液中加入稀硝酸酸化，然后滴入AgNO₃溶液，有白色沉淀生成；

（3）取（2）中的有色沉淀加入足量的稀盐酸后，沉淀全部溶解；

（4）重新取少量固体加入适量蒸馏水搅拌后，固体全部溶解，得到澄清溶液；

（5）向（4）所得的溶液中加入氨水使溶液呈碱性，有沉淀生成，过滤。往得到的沉淀中加入过量的NaOH溶液，沉淀减少。

根据上述实验，这包粉末中一定不含有的离子是        ，肯定含有的离子是            ，不能确定是否含有的离子是             ，可通过            （填实验方法）来进一步确定该离子。

阅读理解。

     Two Christmas traditions have come under attack in recent years from environmentalists: Christmas

cards and Christmas trees.

     Paper cards are seen as wasteful and, for some people, going card free is another way of going green. They also argue that in a world of e-mail, Skype, Facebook and Twitter, people are in touch all the time

anyway; they no longer need the yearly card that connects them with long lost friends. If you want to

send Christmas greetings, there are free e-cards, which get the job done with no postage or wasted

paper.

     However, especially for people who didn't grow up with e-mail, there is something missing from a

Christmas e-mail. The first Christmas cards appeared in London in 1843 and were designed by the

same man who had introduced the world's first postage stamp three years earlier. His name was Sir

Henry Cole.

     They rose in popularity throughout the 20th century. Many people sent cards that were sold for

charity.The most famous of these are the ones sold for UNICEF. In the UK this year, in the three

weeks before Christmas, the post office expects to handle 100 million cards every day. Environmental

awareness also means that nowadays many people recycle their cards; this helps raise money to plant

more trees, as well as recreating more paper.

     When we think of trees at Christmas, there is one that immediately springs to mind-the evergreen tree

that people decorate with ornaments and place their presents under. The custom dates back almost a

thousand years to Germany, Nowadays 33 to 36 million Christmas trees are produced in America and

50 to 60 million in Europe each year. Some trees are sold live with roots and soil so people can plant

them later and reuse them next year.

     Some people prefer artificial trees as they are reusable and much cheaper than their natural alternative. However, environmentalists point out that they are made from petroleum products and they have much

pollution.

1. What is the main idea of the article?

A. To analyze how two Christmas traditions grew in popularity.

B. To introduce the history of two typical Christmas traditions.

C. To point out the problems in some traditional ways of celebrating Christmas,

D. To explain the debate environmentalists and traditionalists about Christmas traditions.

2 Some people suggest getting rid of paper cards because ______.

a. they cannot be recycled and reused

b. they are not environmentally friendly

c. they are mostly sold for charity

d. free e-cards have many advantages over them

e. they are not as necessary as they used to be for people

A. a, b, d        

B. a, c, d          

C. b, d, e        

D. b, c, e

3 What can we conclude from the article?

A. This year has seen a dramatic drop in Christmas card sales and products.

B. The first Christmas cards were designed three years earlier than the stamps.

C. Environmentalists advise people to buy cards that are sold for charity to help raise money

D. Growing environmental awareness is encouraging people to begin to recycle their cards.

4 Which of the following statements is TRUE according to the article?

A. Some people prefer to buy live trees that can be reused next year.

B. Artificial trees are much better than natural ones in all aspects.

C. The custom of decorating Christmas trees first appeared in Britain.

D. There is a wider Christmas tree market in America than in Europe.

（2005年）土地使用权划拨，是指县级以上人民政府依法批准，在土地使用者缴纳补偿、安置等费用后将该幅土地交付其使用，或者将土地使用权无偿交付给土地使用者使用的行为。依据有关法律规定，下列哪一建设用地项目不能取得划拨土地使用权？

A．望湖乡政府办公楼建设用地

B．西关镇人民医院建设用地

C．南湖别墅区通往南山镇的道路建设用地

D．民办北岭大学校区扩建用地

当检修完毕后，必须利用（）对磁力启动器的保护电路、控制电路、信号电路及各种保护进行一次全面检查。

A.停送电

B.检测仪

C.试运行

D.机壳上的试验开关