问题 选择题

能正确表示下列反应的化学方程式是

A.黄铁矿煅烧:2FeS2+5O2 2FeO+4SO2

B.石英与石灰石共熔:SiO2+CaOCaSiO3

C.氨的催化氧化:4NH3+5O2 4NO+6H2O

D.氯气与石灰乳反应:2Cl2+2Ca(OH)2=CaCl3+CaClO2+2H2O

答案

答案:C

题目分析:A.黄铁矿煅烧生成的是三氧化二铁,错误;B.石英与石灰石共熔反应物应该是碳酸钙,错误;C.氨的催化氧化正确;D.氯气与石灰乳反应生成产物是CaCl2+Ca(ClO)2书写错误,故D错误;

阅读理解

阅读理解。

Dear Kitty,

      News! We have a new flat! The rooms are small, but they are comfortable. There are more rooms

here than in our old flat. This is good because now I have my own room. In the old flat, I shared with

my sister.

     My bedroom is my favourite room in our flat. I can be alone in it. I can read or draw. I can listen to

my radio or play CDs. I can play games on my computer and send e-mails to my friends.

     My second favorite room is the kitchen. I love helping my mother cook our meals. She is a very good

cook. She is teaching me how to make many different kinds of dishes. She lived in Morocco when she

was a girl, and she can cook Moroccan food. It's very delicious. That's all for now. Write soon and tell

me about your home. Please get on the Internet so that we can send e-mails to each other.

     All good wishes!

                                                                                                                                         Anna

1. What is the main idea of this article?

A. Anna told Kitty something about her family's new flat.

B. Kitty lives with her family in America.

C. Anna likes her bedroom .

D. Anna's mother is teaching her Moroccan food.

2. What is the difference between the old flat and the new one?

A. The rooms in the new flat are big.

B. The rooms in the old flat were smaller.

C. There are more rooms in the new flat.

D. There were more rooms in the old flat.

3. Why is Anna very pleased with the new flat?

A. Because she has to share a room.        

B. Because she has a big room.

C. Because she has a small room.          

D. Because she has her own room.

4. Which room is Anna's favorite?

A. The living room.  

B. The kitchen.  

C. The bedroom.

D. The bathroom.

5. What does Anna do in the kitchen?

A. She helps her mother cook their meals.      

B. She plays computer games.

C. She teaches her mother how to cook.        

D. She reads about Moroccan food.

单项选择题