(4分)已知AgCl为难溶于水和酸的白色固体,Ag2S为难溶于水和酸的黑色固体。

题型:填空题

问题:

(4分)已知AgCl为难溶于水和酸的白色固体,Ag2S为难溶于水和酸的黑色固体。向

AgCI和水的悬浊液中加入足量的Na2S溶液并振荡,结果白色固体完全转化为黑色固体:

(1)写出白色固体转化成黑色固体的化学方程式:         ▲              

(2)白色固体转化成黑色固体的原因是:                ▲               

考点:沉淀溶解平衡
题型:填空题

我们在进行探究实验时,为了避免偶然因素的影响,常需要设置重复组,取其平均值,但有些实验却是例外。下列实验不需要测平均值的是(   )

A.测定某种食物中的能量

B.探究光对鼠妇生活的影响

C.探究果蔬中维生素C的含量

D.探究馒头在口腔中的消化

题型:填空题

读“黄河流域图”,分析回答.

(1)图中字母A所代表的支流名称是______.

(2)黄河以河口作为上、中游的分界点,请用字母C在图中相应位置标注出来.

(3)黄河下游游荡在______上、水流______.

(4)黄河下游出现“地上河”的主要原因是______.

(5)黄河是我国的“母亲河”,但历史上水患严重.你认为治理黄河水患在中游应采取的主要措施是什么?

题型:填空题

李清于2003年在海中市中城区远东电子计算机集团购买了一笔记本电脑,后电脑出现问题,李清在互联网上发表文章并设立个人主页,向社会公众介绍在购买、使用和维修被上诉人商品过程中所遭遇的经历,对其产品质量和服务质量进行批评和评论但一审作出(2004)海民初字第538号《民事判决书》,认为李清侵犯了远东电子计算机集团的名誉权,应当删除全部主页内容,注销网址以及主页有链接的镜像域名,并对其留言版上他人的留言承担责任。理由如下:1、电脑是李清替公司所买,李清并非消费者,无权发表任何评论;2、《过程》一文有不实和侮辱性语言;3、留言版上他人对公司有侮辱性语言。李清认为他就是消费者,且《过程》并无不实之处,判决内容根本无法执行,要求他对别人的言行负责不符合法律。遂向中院提起上诉。请就本案写一份民事上诉状。

题型:填空题

I remember the first time that I was extremely happy. I was about 8 years old when for the first time, there was a computer in the classroom. I remember that my teacher allowed each student to take turns playing various educational games on the computer. One day, I found the source code (密码) for one of these games. Without knowing or being taught any programming language, I was able to figure out some portions of the BASIC code.

Anyone who knows a bit of programming can tell you that I just give myself an infinite (无穷大) number of lives in the game, so I can continue playing forever. This was also my first introduction to algebra (代数), and I didn’t even know it at the time. This was a decisive (决定性的) moment in my life. For the first time that I can remember, I was quite happy because of what I was learning and what I was able to do. As a result, I became enthusiastic for the rest of my life about self-learning and computers, and I was quite happy doing them, too.

I’ve noticed that people who are truly content with life are enthusiastic in what they do. This enthusiasm, along with good health, is the key to being happy. It also leads to self-confidence and fulfillment in life, too. It may also lead to success, wealth, and achievements.

Yes, success, wealth, or achievements seem to bring some people happiness, too. Yet, I don’t think they can indeed make people happy. I know plenty of people who are successful and wealthy. However, I also know several of the people with successful businesses are not happy with what they are doing. I know people who continuously buy themselves new toys, cars, computers, and televisions, yet they never seem content for too long.

Please remember that happiness comes from enthusiasm, and happiness is the journey of life, not the destination.

小题1:What did the writer’s teacher ask the students to do on the computer?

A.To play various educational games.

B.To figure out the BASIC code.

C.To get the knowledge of algebra.

D.To read some latest news.小题2:The underlined word in Paragraph 1 probably can be replaced by ______.

A.danger

B.parts

C.health

D.value小题3:According to the author, what can lead a person to be happy?

A.Success and wealth

B.Education and self-confidence.

C.Knowledge and achievements

D.Enthusiasm and good health.小题4:The author uses his own experience of being happy in order to tell us ______.

A.it’s very easy to learn the BASIC code

B.he has always been happy since his childhood

C.concentrating on what you love makes you happy

D.one can solve any problem in life by himself小题5:What’s the main idea of the last but one paragraph?

A.Wealth cannot bring any people any happiness.

B.Rich people easily feel unhappy nowadays.

C.One will become unhappy once he gets what he wants.

D.Success, wealth, or achievements can’t indeed make people happy.

题型:填空题

进行浴巾游戏的适宜年龄为()

A、3个月以内的婴儿

B、新生儿前三天

C、新生儿----1个月内

D、6个月-----2岁

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