我国在过渡时期对个体私有制进行改造，建立起（）A．劳动者个体所有制 B．社会主义全民

使用过量最易引起心律失常的药物是

A．去甲肾上腺素

B．间羟胺

C．麻黄碱

D．多巴胺

E．肾上腺素

请结合以下材料回答问题：

材料一 我国东部某城市20世纪90年代以来人均国民收入增长的总体情况：人均年收入（万元）

　　　　　　

材料二 该城市居民收入的结构变化情况：

　　　　　　

材料三 我国股票、国债市场近年来的规模增长情况

　　　　1993年以来股票市值占当年GDP的比重

　　　　1993年以来我国国债发行累计规模（单位：亿元人民币）

⑴上述材料分别说明了什么经济现象？

⑵结合材料一、二，解释居民收入结构变化的原因。

⑶结合材料二、三，说明中国人民银行调低存款利率后，该市居民可能会有什么反应，并说明理由。

某生产单一产品的建设项目，预计年产量为50000件，产品销售价格6000元／件，总成本费用12000万元，其中固定成本为5000万元，成本与产量呈线性关系，则该建设项目的盈亏平衡点价格是（）元／件。

A.1400

B.1650

C.2100

D.2400

如图1-6-16所示，将质量为m的小球，用长为L的轻绳吊起来，并靠在光滑的半径为r的半球体上，绳的悬点A到球面的最小距离为d.

图1-6-16

(1)求小球对绳子的拉力和对半球体的压力;

(2)若L变短，问小球对绳子的拉力和对半球体的压力如何变化？

阅读理解。

根据短文内容，从下框A~F选项中选出能概括每段主题的最佳选项。选项中有一项为 多余项。 A. How to take notes and rewrite in one`s own words B. Advantages of taking notes C. Taking some useful notes D. Taking notes is a help to create new ideas in the future E. Need to change information from an encyclopedia into one`s own F. Two ways of writing a note and their advantage 1.       In school and out, many people need to put the information they find in an encyclopedia into words of their own. The student who is writing a composition, the businessman who is writing a report, and the housewife who is preparing a talk for a woman`s club often need the kind of information they find in an encyclopedia. But no one wants what he writes to read as it were copied from an encyclopedia. What you write should read as if it came from you. 2.       Even if you have every intention of rewriting the material in your own words, it is unwise to copy information from an encyclopedia word for word. Instead, write brief notes to remind yourself of the facts you wish to express. Later with the encyclopedia closed, you can expand those notes into sentences and paragraph of your own. 3.      The advantage of note-taking over copying is that it forces you to think for yourself at least twice-first when you are reading and second when you are using your notes. It is easy to copy a paragraph without being sure of what it means. But to make a note expressing the meaning of a paragraph in your own words requires you to prove to yourself that you have understood that paragraph. Note-taking also helps you to remember what you have read. It is much easier to remember what you have said in a note that someone else has said in a book. Even if author`s vocabulary is easily understood, it isn`t the vocabulary you naturally think of. Putting his ideas into your vocabulary makes those ideas yours, and yours are the ideas you best remember. 4.      Some people write notes in complete sentences. Others write notes that are phrases of topics. For example, a sentence note on the paragraph above might be “Notes help you remember.”A topical note for the same paragraph might be “Notes as memory helps”. Both of these are four-word notes, and therefore either has an advantage to save time at the moment of note-taking 5.      Remember that the purpose of taking notes is always for some future use, often for some future writing that you will do. Notes that make you think as you write are better than notes that merely help you remember information. The thinking writer is the one who creates something new, something that no one can point to and say, “Oh, I have seen that same paragraph in an encyclopedia.”