问题 选择题

氢化铵(NH4H)与氯化铵的结构相似,已知NH4H与水反应有H2生成,下列叙述不正确的是(       )

A.NH4H是离子化合物,含有离子键和共价键

B.NH4H溶于水

C.NH4H与水反应时,NH4H是氧化剂

D.将NH4H固体投入少量水中,有两种气体产生

答案

答案:C

氢化铵氢元素的化合价是-1价,在生成物中是0价,化合价升高,被氧化,最还原剂,C不正确,其余都是正确的,和水反应除了生成氢气外,还有氨气生成,答案选C。

阅读理解

阅读理解。

     In the world, soccer of football is the most popular sport. This is because many countries have wonderful

teams for the World Cup. The World Cup is held every four years.

     To remember 2002 FIFA World Cup,children from different countries and more than 60 children from

Japanese schools came together and spent three weekends drawing a big picture called "Dream (梦幻) World

Cups" in Japan.The children drew animals, flowers and people playing occer under a blue bright sky. They

wished each football team good luck by drawing the flags (旗帜) of all the countries that will take part in the

World Cup in Japan and South Korea. The picture was put up in a park near a playground in Yokohama. Some

football teams will have games there.

     Are you a football fan (迷)? The World Cup makes more and more people interested in football

Teenagers (青少年) like playing and training football. Many of them love some football stars so much that they

get the pictures of their favorite players on the walls of their rooms. That is the way to show their love for the

World Cup as children in Japan.

1. If a country wants to take part in the World Cup, she must have _____. [ ]

A. Many football fans  

B. a very good team

C. many football player  

D. a big playground

2. The next World Cup will be held in _______. [ ]

A. 2006

B. 2007

C. 2005 

D. 2004

3. From the passage, in the picture children drew many things except _______. [ ]

A. people playing football

B. pictures of some football stars

C. a sunny sky

D. flowers

4. In "Dream World Cup", the children drew the flags of some countries ______. [ ]

A. to show their love for their own country

B. to tell the people their stories

C. to show their good wishes for the football teams

D. to show their new ideas about football

5. Many teenagers own the pictures of some football stars because ______. [ ]

A. they are interested in football 

B. they are football fans

C. they think their favorite players are great 

D. all of A, B an

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