问题 选择题

向氯化铜和氯化镁的混合溶液中,加入过量锌粉,充分反应后过滤,滤纸上得到的固体物质是(  )

A.锌和铜

B.铜

C.镁和铜

D.锌

答案

根据金属活动性顺序,锌排在铜的前面,锌排在镁的后面,所以锌能把铜从氯化铜溶液中置换出来,锌不能把镁从氯化镁溶液中置换出来,所以充分反应后过滤,滤纸上得到的固体物质中一定有铜;另外,题目中“加入过量锌粉”也提示了你充分反应后过滤,滤纸上得到的固体物质中一定有锌.所以综合这两点考虑滤纸上得到的固体物质是铜和锌.故答案为:A

单项选择题
阅读理解

阅读理解。

     Meeting people from another culture can be difficult. From the beginning, people may send the wrong

signals(信号). Or they may pay no attention to signals from another person who is trying to develop a

relationship.

     Different cultures emphasize(强调) the importance of relationship building to a greater or lesser degree. For example, business in some countries is not possible until there is a relationship of trust. Even with

people at work, it is necessary to spend a lot of time in "small talk", usually over a glass of tea, before

they do

any job. In many European countries-like the UK or France-people find it easier to build up a lasting working relationship at restaurants or cafes rather than at the office.

     Talk and silence may also be different in some cultures. I once made a speech in Thailand. I had expected my speech to be a success and start a lively discussion; instead there was an uncomfortable silence.

The people present just stared at me and smiled. After getting to know their ways better, I realized that

they thought I was talking too much. In my own culture, we express meaning mainly through words, but

people there sometimes feel too many words are unnecessary.

     Even within Northern Europe, cultural differences can cause serious problems. Certainly, English and

German cultures share similar values; Germans prefer to get down to business more quickly. We think

that they are rude. In fact, this is just because one culture starts discussions and makes decisions more

quickly.

      People from different parts of the world have different values, and sometimes these values are quite

against each other. However, if we can understand them better, a multicultural environment(多元文化

环境) will offer a wonderful chance for us to learn from each other,

1. In some countries, eating together at restaurants may make it easier for people to ______.

A. develop closer relations    

B. share the same culture

C. get to know each other    

D. keep each other company

2. The author mentions his experience in Thailand to show that_________.

A. the English prefer to make long speeches

B. too many words are of no use

C. people from Thailand are quiet and shy by name

D. even talk and silence can be culturally different

3. According to the text, how can people from different cultures understand each other better?

A. By sharing different ways of life  

B. By accepting different babits

C. By recognizing different values    

D. By speaking each other's languages

4. What would be the best title for the text?

A. Multicultural Environment  

B. Cross-Cultural Differences

C. How to Understand Each Other  

D. How to Build up a Relationship