对精馏操作下列的因素有（）。A.三点 B.四点 C.五点 D.六点

下列化学用语正确的是

A．乙烯的结构简式CH₂=CH₂

B．甲烷的结构式 CH₄

C．Mg原子结构示意图

D．H原子的电子式 H⁺

词汇运用：根据所给句子的意义及首字母或中文提示写出正确的单词。

1. It is polite to help those who are in t            .

2. There is no d             that computers are widely used in all kinds of areas.

3. Trees can p             the wind from blowing the earth away .

4. She is w              in English, let's try our best to help her improve it.

5. Liuxiang is regarded as our national h             .

6. Make sure that all               (垃圾) should be put into the dustbin.

7. We should learn a lot and master some               (基础的) skills when we are learning.

8. Computers are used in business to place and                (删除) orders .

9. When a child makes a little progress in studying , we should               (表扬) him for it.

10. What's the                (人口) of Laibin City? It's more than 2,450,000.

检查关联方和关联交易，以验证其在财务报表中是否得到充分披露，即是对列报的（）认定的运用。

A.发生及权利和义务

B.完整性

C.准确性和计价

D.分类和可理解性

燃油的最低压缩温度为（）

A.200℃

B.250℃

C.300℃

D.350℃

Who won the World Cup 1994 football game What happened at the United Nations How did the critics like the new play (1) an event takes place, newspapers are on the streets (2) the details. Wherever anything happens in the world, reporters are on the spot to (3) the news.
Newspapers have one basic (4) , to get the news as quickly as possible from its source, from those who make it to those who want to (5) it.
Radio, telegraph, television, and (6) inventions brought competition for newspaper. So did the development of magazines and other means of communication. (7) , this competition merely spurred the newspapers on. They quickly made use of the newer and faster means of communication to improve the (8) and thus the efficiency of their own operations. Today more newspapers are (9) and read than ever before. Competition also led newspapers to branch out into many other fields. Besides keeping readers (10) of the latest news, today’s newspapers (11) and influence readers about politics and other important and serious matters. Newspapers influence readers’ economic choices (12) advertising. Most newspapers depend on advertising for very (13) .
Newspapers are sold at a price that (14) even a small fraction of the cost of production. The main (15) of income for most newspapers is commercial advertising. The (16) in selling advertising depends on a newspaper’s value to advertisers. This (17) in terms of circulation. How many people read the newspaper
Circulation depends (18) on the work of the circulation department and on the services or entertainment (19) in a newspaper’s pages. But for the most part, circulation depends on a newspaper’s value to readers as a source of information (20) the community, city, county, state, nation, and world—and even outer space.

[A] value [B] ratio [C] rate [D] speed