已知X、Y、Z、T四种元素中，只有T不是短周期元素，与它们有关的部分信息如下表
(1)Y元素在周期表中的位置为________，写出X原子核外电子排布的轨道表示式：________。
(2)冶炼T元素单质的主要反应中，还原剂是________，T元素的单质冶炼方法与Y元素的单质冶炼方法不同，其原因是________________。
(3)对Z元素的单质或化合物描述一定正确的是________。
a．单质不溶于任何溶剂 b．其最高价氧化物的水化物为弱酸
c．其最高价氧化物由分子构成 d．气态氢化物不稳定
(4)上述四种元素中，其最高价氧化物的水化物呈两性的物质是________（填化学式），试用电离方程式表示出其两性的原因________________。
(1)第三周期ⅢA族；
(2)CO；金属阳离子氧化性强弱不同
(3)d
(4)Al(OH)3；AlO2-+H++H2O
Al(OH)3
Al3++3OH-
| 在B栏中找出与A栏问题相对应的答语，将序号填在括号里。 |
| A ( ) 1. What's the dog doing? ( ) 2. What are they doing? ( ) 3. Can geese swim? ( ) 4. Can I speak to your mom? ( ) 5. What is your mother doing? ( ) 6. Is your father reading a newspaper? | B A. Yes, they can. B. It's swinging. C. They are dancing. D. She is washing the clothes. E. Sure. F. Yes, he is. |
| 信息匹配 | |
Voluntary learning in organized courses by mature men and women is called adult education.Such education is offered to make people able to enlarge and interpret their experience as adults.Adults may want to study something which they missed in earlier schooling, get new skills or job training, find out about new technological development, seek better self－understanding, or develop new talents and skills. 2.____ This kind of education may be in the form of self－study with proper guidance through the use of libraries, correspondence (函授) courses, or broadcasting.It may also be acquired collectively in schools and colleges, study groups, workshops  , clubs, and professional associations.3.____ Modern adult education for large numbers of people started in the 18th and 19th centuries with the rise of the Industrial Revolution.Great economic and social changes were taking place: people were moving from rural areas to cities: new types of work were being created in an expanding factory system. These and other factors produced a need for further education and reeducation of adults. 4._____ The earliest program of organized adult education arose in Great Britain in the 1790s, with the founding of an adult school at Nottingham and a mechanics' institute at Glasgow.The earliest adult education institution in the United States was founded by Benjamin Franklin and some friends in Philadelphia in 1727. 5.____ People recognize that continued learning is necessary for most forms of employment today.For example, parts of the adult population in many countries find it necessary to take part in retraining programs at work or even to learn completely new jobs.Adult education programs are springing up constantly to meet these and other needs. |