问题 选择题

已知:

①CO(g)+H2O(g)CO2(g)+H2(g);△H1=-41.2kJ/mol

②CH4(g)+CO2(g)2CO(g)+2H2(g);△H2=+247.3kJ/mol

③CH4(g)+H2O(g)CO(g)+3H2(g);△H3

若反应③在体积一定的密闭容器中进行,测得CH4的物质的量溶液随反应时间的变化如图所示。下列有关叙述错误的是

[ ]

A.△H3=+206.1 kJ/mol

B.反应③进行到10 min时,改变的外界条件可能是升高温度

C.反应③进行的过程中,0~5min这段时间共吸收的热量为103.05kJ

D.当反应③平衡后,向容器中通入CH4,平衡向正反应方向移动,CH4的转化率将增大

答案

答案:D

阅读理解

阅读理解。

     At midnight at New Year's Eve. people in Rome (罗马) and Italy (意大利) throw (扔) all the things

they no longer want. The streets are filled with old chairs, beds, clothes and dishes .... In Madrid

(马德里), Spain (西班牙), new year comes in more quietly (安静地). People go to the main square

(广场), each holding a bag of grapes. As the clock strikes (敲) twelve, the people eat grapes.

     In Tokyo people eat noodles at New Year's Eve. This food is said to bring long life. Early the next

morning, some Japanese families climb Mount Fuji (富士山). There they watch the first sunrise (日出)

of the new year.

     In China , New Year's food include (包括) a whole fish and a chicken . The chicken must be

presented (呈现) with a head, a tail and two feet to symbolize (象征) completeness (完美).

1. This story is about New Year's Eve in _____.

A. Italy and Spain              

B. England

C. Japan and China              

D. Both A and C

2. From the story we know that people in some countries bring in New Year By _____.

A. throwing everything            

B. playing games

C. eating some special food        

D. drinking coke

3. People climb Mount Fuji to _____.

A. ee the sun come up          

B. look at the stars

C. search for New Year's flowers  

D. watch the sun go down

4. The people who hope to have long life from their New Year's food _____.

A. are Spanish    

B. are Japanese    

C. are Chinese  

D. are Italians

5. People in China eat _____ at New Year's Eve because they symbolize completeness.

A. grapes      

B. noodles      

C. fish and chicken    

D. whole fish and chicken

问答题 简答题