问题 选择题

“神州七号”太空舱利用NiFe2O4将航天员呼出的废气快速转化为航天员需要的气体,而NiFe2O4的质量和化学性质都不变,在该过程中NiFe2O4是(  )

A.反应物

B.催化剂

C.生成物

D.消毒剂

答案

由题意可知NiFe2O4促进了反应的发生,但反应前后的质量和化学性质都不变,符合催化剂的定义,属于催化剂,分析所给的选项可以知道选项B是正确的.

故选B.

阅读理解

阅读理解。

Britain Today

     Food: British people like good food,and more than half of them go to a restaurant every month. Fast

food is also very popular- 30% of all adults have a hamburger every three months, but 46% have fish and chips!

    Sports: British people don't do a lot of sports. Only 17% of people go swimming every week,about

9% go cycling and 8% play golf-and only 6% of people play football( but 32% go to watch it ).

    Cinema and TV: Films are very popular in Britain,and about 60% of people between 15 and 24 go

to the cinema every month. At home, men watch TV for about three hours every day - two quarters

more than women.

    Holidays: British people love going on holiday,and have 56 million holidays every year. Most of these

holidays aren't in the UK-27% are in Spain,10% are in the USA,and 9% are in France. Maybe this is

because the weather in Britain isn't very good!

1. Which food could be more popular among British adults,a hamburger or fish and chips?       

A. A hamburger.        

B. Fish and chips.

C. Both.              

D. Neither.

2. Which of the followings can show the right percentage (百分比) about Sports in Britain?    

A. 30%    

B. 46%      

C. 17%          

D. 60%                 

3. Those who are interested in movies are ______.

A. men    

B. women    

C. old people    

D. young people

4. How long do British women spend watching TV every day?

A. Three hours.              

B. Three hours and a half

C. Two hours                

D. Two hours and a half

5. British people's favorite country for a holiday is ______.

A. Spain    

B. France    

C. America      

D. Australia

多项选择题