问题 选择题

下图为某一反应的微观示意图,下列说法错误的是 

反应前                        反应后

A.化学反应前后原子的种类、个数、质量都不变

B.X物质中碳元素的质量分数为75.0 %

C.该反应的化学方程式:CH4+O2CO2+H2O

D.该反应中反应物X、Y的分子个数比为1∶2

答案

答案:C

题目分析:有微观示意图可知,A选项化学反应前后原子的种类、个数、质量都不变是正确的叙述;B选项X物质中碳元素的质量分数为75.0 %是正确的叙述;C选项是错误的表示,化学方程式没有配平;答案选择C;D选项该反应中反应物X、Y的分子个数比为1∶2是正确的叙述.

阅读理解

阅读理解。

     Easter (复活节) is one of the two major (主要的) Christian (基督教的) festivals (节). Easter

celebrates (庆祝) the death (死亡) and resurrection (复活) of Jesus Christ (耶酥基督) 000and

Christmas celebrates his birth (出生). It's not as big a festival as Christmas. It starts usually in late

March or early April and the Easter holiday is Friday , Saturday , Sunday and Monday. It's quite a

long holiday for everybody.

     The main (主要的) symbol (象征物) of Easter is the Easter egg. Children like Easter eggs

because they are made of chocolate. Eggs are a symbol of new life.

     Easter is also a time for families to get together like Christmas. Many people see Easter as a nice

long holiday and they have a good time with their families and friends.

1. People love Easter because ___________. [ ]

A. it's a long holiday

B. it's the birthday of Jesus Christ

C. they can have real eggs on that day

D. everybody believes in Jesus Christ

2. From the passage above, which sentence is wrong? [ ]

A. Easter is one of the most important festivals in western countries.

B. Easter is a day that everybody gets his resurrection.

C. Easter is a religious (宗教) festival.

D. Most people love Easter.

3. People begin to celebrate Easter in ________. [ ]

A. Mid-April or late April

B. mid-March or late March

C. late March or early April

D. early March or mid-March

4. Easter eggs are_____________. [ ]

A. covered by chocolate (巧克力包着的)

B. chocolate eggs

C. a symbol of death

D. not food

5. From the passage above, we can know that __________. [ ]

A. Jesus Christ died on Christmas Day

B. Jesus Christ was born on Christmas Day

C. Jesus Christ was born on Easter

D. Jesus Christ died and got his resurrection on Christmas Day

单项选择题