问题 填空题

请从给定化合价的五种元素中,选择适当的元素组成符合下列要求的物质:

物质类别单质氧化物
化学式     
 

答案

物质类别单质氧化物
化学式CuK2OHNO3KOH KNO3
 

题目分析:只由一种元素组成的纯净物,是单质;只由两种元素组成,其中一种是氧元素,属氧化物。酸由氢离子和酸根离子构成;碱由金属离子和氢氧根离子构成;盐由金属离子和酸根离子构成。

单项选择题
阅读理解

You can find language pollution whenever you open a newspaper or turn on your TV set, listen to a popular song at various advertisements. Language pollution exists almost everywhere and can be seen in the following places;

1. Chinese character are written in the complex(复杂的)form. Although simplified(简单的) Chinese characters were accepted for use many years ago, it seems that more and more people like Chinese characters written in the complex form.

2. Many goods are produced in China but carry foreign names, which sound strange and have no meaning at all.

3. Words and expressions being used have a bad meaning. “Ba”(霸), which means bully(巨大的)in Chinese, is one example. Now there are a lot of goods, restaurants, even factories or firms, with “Ba” in their names.

4. There are too many incorrect grammatical expressions. Some films have strange names and incorrect grammatical structures(结构). “Ai ni mei shang liang”, which means “I love you without consulting”, is grammatically incorrect and this kind of expression is now becoming popular.

Some language experts point out that language pollution must be done away with, which is an idea shared by many others and myself.

小题1:.The writer of the passage suggests that______.

A.something be done to make our language pure

B.the Chinese language not have the word “Ba”

C.everything have a good name and a good meaning

D.everybody try their best to stop language pollution小题2:. What the writer wants to say is that_______.

A.great difference exists between the Chinese characters written in the complex form and simplified form

B.language used by our newspapers, TV programs, pop songs and advertisements are getting polluted

C.many people agree with the experts on language pollution in China

D.some film writers haven’t studied Chinese grammar小题3:.The underlined expression “done away with” in the last paragraph means______.

A.got away

B.recycled

C.cleaned

D.ended小题4:. Which of the following is the best title of the passage?

A.More Attention to Grammar.

B.Experts’ Good Advice.

C.Films with Strange Names.

D.Pollution of our Language.