由间隔不等的时点数列计算平均发展水平，以（）为权数A、时期长度 B、时点长度 C、间隔长

（1）用热水配制AlCl₃溶液，会出现浑浊现象，原因是（用离子方程式和必要的文字说明）：

                                                                        。要消除浑浊现象，又不污染药品，可加入适量的__________溶液。

（2）常温下，有①0.01 mol/L HCl溶液；②pH=12的氨水，其中水的电离程度①     ②，（选填“＞”、“＜”或“＝”）；若将①、②混合后所得溶液pH=7，则消耗溶液的体积：①    ②（选填“＞”、“＜”或“＝”）。若用①来滴定未知浓度的氨水，通常选用____________作指示剂，达滴定终点时各离子浓度由大到小的顺序是_________________________________。

（3）某温度（T℃）时，测得0.01 mol·L^-1NaOH溶液的pH=11，则在该温度下，将100 mL 0.2 mol·L^-1的稀盐酸与100 mL 0.4 mol·L^-1的NaOH溶液混合后，溶液的pH=        。

下列句子中加粗的成语使用不恰当的一项是[ ]

A．柳城的蜜橘节、融安的金桔节、融水的坡节，都是各县因地制宜而打造的地方“旅游名片”。

B．每到夏天，柳江百朋的万亩荷塘，莲叶田田，荷花亭亭，景美如画，引人入胜。

C．三江县以它得天独厚的侗族原生态旅游资源，吸引越来越多的国内外游客。

D．他成为“学习标兵”后，表现更加积极，几乎每节课都肆无忌惮地举手发言。

There are several ways you can find out about the countries and places you wish to visit. You can talk to friends who have travelled to the places. Or you can go and see a color film. Or you can read travel books.

It would seem that there are three kinds of travel books. The first are those that give a personal, subjective(主观的)account of travels which the author has actually made himself. If they are informative and have a good index(索引), then they can be useful to you when you are planning your travels. The second kind are those books whose purpose is to give a purely objective(客观的)description of things to be done and seen. If a well-read, cultured person has written such a book, then it is even more useful. It can be sorted as a selected guide book. The third kind are those books which are called “a guide” to some place or other. If they are good, they will, in addition to their factual information, give an analysis or an explanation. Like the first kind they can be inspiring and interesting. But their basic purpose is to help the reader who wishes to plan in the most practical way.

Whatever kind of travel book you choose you must make sure that it does not describe everything as “wonderful”, “excellent” or “magical”. You must also note its date of publication because travel is a very practical affair and many things change quickly in the twenty-first century. Finally, you should make sure that the contents are well presented and easy to find.

小题1:This passage is about      .

A．how to travel

B．how to buy travel books

C．how to read a travel book

D．travel books小题2:The following travel books may be of use when you plan your travels except      .

A．the book written by some people who have had the same travel experience themselves

B．the book which tells you what is worth doing and seeing based on the facts

C．the book in which a lot of big adjectives are used to draw your attention

D．the book which offers you a lot of useful information like a tour guide小题3:The date of the publication must be noticed because      .

A．the world is changing and so are the places you are going to visit

B．the price of the book is always changing

C．the author of the book may be different

D．the contents of the book are always the same

脑膜瘤术前栓塞最常用的栓塞物质为()

A．明胶海绵颗粒 

B．碘油 

C．微粒 

D．无水酒精 

E．自身血凝块

“我认为，我爸爸觉得我是个守信用的人。”这是：（）

A、镜我

B、物质自我

C、社会自我