数据平衡校对

已知X、Y、Z、W、N是短周期元素中的四种元素，它们的原子序数依次增大．X元素的原子形成的离子就是一个质子，Z、W在元素周期表中处于相邻的位置，它们的单质在常温下均为无色气体，Y原子的最外层电子数是内层电子数的2倍，工业上常用电解w与N的化合物来制备N单质。

（1）请写出Z在元素周期表中的位置________     。化合物甲由元素X与Z组成，1mol甲含18mol电子，请写出甲的电子式：          ；

（2）元素N的一种常见的可溶性盐溶液呈碱性，其原因是（用离子方程式表示）：    ；

（3）由X、Y、Z、W四种元素中的三种组成的一种强酸，该强酸的稀溶液能与铜反应，其离子方程式为                       。

（4）已知离子化合物乙由X、Y、Z、W四种元素组成，乙既能与盐酸反应，又能与NaOH溶液反应，1mol 乙能与过量NaOH浓溶液反应，最多可生成22.4L气体（标准状况）。写出加热条件下乙与过量NaOH溶液反应的离子方程式                                    。

（5）乙溶液中所有离子的浓度等式表达式为                                    。

TENS的主要治疗作用是镇痛，对急、慢性疼痛，为达到短期止痛效果应选用的主要参数()

A．频率150Hz，T宽＞0.3ms，运动阈上

B．频率20Hz，T宽0.1ms，感觉阈上

C．频率70～100Hz，T宽＜0.2ms，感觉阈

D．频率1～4Hz，T宽0.2～0.3ms，运动阈上

E．频率70Hz，T宽0.2ms，感觉阈下

.

第II卷（共45分）

一、阅读表达(共5小题；每小题1分，满分5分)

阅读下面的短文和问题，根据短文内容，在相应题号后的横线上写下相关信息（不多于五个单词），完成对该问题的回答。答语要结构正确，书写工整，字迹清楚。

London’s Chinese community (社区) dates back to the 18th century, when a small number of Chinese sailors moved to the city to work in Limhouse, east London. As time went on, other Chinese people came to this area and Limhouse began to be known as “Chinatown”. However, London’s Chinese community remained very small for many years: at the start of the 20th century, there were just 545 Chinese people in Britain.

After the Second World War, many farmers in Hong Kong lost their jobs and came to London. As Limhouse had been almost destroyed during the war, they settled in a different area—a part of central London near Leicester Square. This area is now what Londoners call Chinatown.

At first, the new immigrants (移民) found it difficult to get jobs. In the 1950s, however, a small Chinese restaurant opened in London. Many British people visited it and said that Chinese food was wonderful! Suddenly, Chinese restaurants and take-aways started opening in every part of the city. Instead of too little work, the new Chinese immigrants now found that they had too much! They worked as cooks, managers or waiters. Most of them enjoyed their lives and arranged their friends and relatives to join them from overseas.

As time went by, London’s Chinese community became more and more successful. The sons and daughters of the original restaurant workers studied and worked very hard. And most went on to get highly paid jobs. Many Chinese families left Chinatown and moved to the more expensive outskirts. Chinatown, however, is still as lively as ever.

1. When did the first Chinese immigrants come to London?

_________________________________________________.

How many Chinese people were there in Britain at the beginning of the 20th century?

__________________________________________________.

3.What happened in London in the 1950s?

__________________________________________________.

4. What did Chinese immigrants come to London to do in the 1950s?

__________________________________________________.

5. Where is London’s Chinatown now?

__________________________________________________.

遥测地震电缆线有什么特点？

（）被认为是最有效的矫正儿童不良行为的技术。

A.行为管理治疗

B.认知—行为治疗

C.心理治疗

D.药物辅助治疗