问题 填空题

2010年8月26日,科技都在京召开新闻发布会,宣布我国第一台自行设计、自主集成研制的3000m级海试取得成功,实现了我国深海装备技术的跨越式发展。    

(1)潜水员的呼吸面具用Na2O2与人体呼出的CO2反应来制取氧气,供潜水员呼吸。该反应的另外一种生成物是碳酸钠,试写出该反应的化学方程式:_______________________;    

(2)现有39gNa2O2与CO2完全反应,可放出 O2______g。

答案

(1)2Na2O2 +2CO2= 2Na2CO3 +O2  

(2)8

阅读理解

If you have no friends around you, it’s time that you should know about your neighborhood. Not all of your neighbors out there are friendly, but at least you need to communicate with them. It is common that when you are new to the neighborhood, your neighbors might actually greet you in an inspiring way.

In other words, they are pleased to welcome you in their neighbor-hood. Both you and your neighbors may start in getting known to each other by introducing yourselves. This is a sign that you and your neighbors are actually friends. Instead of watching television and playing computer games all the time, you also need to take a break and have some fun talking with your neighbors. But if you want to make friends with them, you need to do something that might please them. The only problem for this situation is that you are afraid to approach and greet them in a nice way.

This is a challenge that you or your fellow neighbors must be aware of. You need to get as many friends as possible in your neighborhood, and one of them is to get closer with the unfriendly. If you want to get closer with him but he refuses to be friends with you, don’t force him anymore. Treat him with some respect if you don’t like to create any more problems. However, if he agrees to be your friend, you are lucky and start treating him like a friend. It is very tough to approach a person in your neighborhood, but it is a good challenge. This is how important for you to get closer with your neighbors, even if they’re unfriendly. This is better than sticking yourself alone at home and not having time for social interactions (交往) with real people.

小题1:The passage is mainly about ______.

A.the importance of friendship in our life

B.how to build good neighborhood relations

C.methods to communicate effectively with people

D.how to get rid of misunderstandings with neighbors小题2:Which of the following statements does the writer agree with according to the passage?

A.It’s just natural that all our neighbors are not friendly.

B.Neighbors are usually unwilling to greet newcomers.

C.Television and online games help reduce one’s loneliness.

D.Making friends with the unfriendly neighbors needs patience.小题3:What’s the most difficult in making friends with neighbors?

A.Staying away from television and games.

B.Knowing more about neighbors’ situations.

C.Getting known to each other by introducing.

D.Getting close with the unfriendly neighbors.小题4:The main purpose of the passage is to ______.

A.share experience

B.provide facts

C.give advice

D.compare opinions

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