问题 选择题

下列命题的逆命题是真命题的是(  )

A.对顶角相等

B.如果两个角是直角那么这两个角相等

C.全等三角形的对应角等

D.两直线平行,内错角相等

答案

A、对顶角相等的逆命题为“相等的角为对顶角”,此命题为假命题,故本选项错误;

B、如果两个角是直角那么这两个角相等的逆命题为“如果两个角相等,那么这两个角为直角”,此命题为假命题,故本选项错误;

C、全等三角形的对应角等的逆命题为“对应角相等的三角形是全等三角形”,此命题为假命题,故本选项错误;

D、两直线平行,内错角相等的逆命题为“如果内错角相等,那么两直线平行”,此命题为真命题,故本选项正确;

故选D.

阅读理解

阅读理解。

     Mr King goes to a dinner party. He wears old clothes. He comes into the room. But people there don't

 look at him at all. They don't ask him to sit at the table.

     Mr King goes home and puts on (穿上) his good clothes. He goes back to the party. Everyone in the

 room stands up and smiles (微笑)at him. They give him very good food to eat.

     Mr King takes off (脱下) his clothes, puts his clothes in the food and says, "Please eat, my clothes!"

 The other people ask, "What are you doing?" He answers, "I'm asking my clothes to eat the food. When

 I wear old clothes, you don't look at me. You don't ask me to sit down. Now I am in the good clothes

 and you give me the very good food. Now I see, you give the food for my clothes, not for me!"

1. Mr King goes to a dinner party, but people there don't look at him. This is because (因为) _____.

    A. they don't know him.        

    B. he is young  

    C. he wears old clothes        

    D. he is old

2.  Why does Mr King go home?

    A. He wants to buy a present.    

    B. He wants to put on his new clothes.

    C. He wants to go to bed.        

    D. He wants to eat at home.

3. Mr King goes back to the party. Why do people give him very good food to eat?

    A. Because they are very sorry.    

    B. Because they wear old clothes.

    C. Because he wears new clothes.  

    D. Because he smiles at them.

4. Why does Mr King take off his new clothes?

    A. The room is very warm.      

    B. He asks his new clothes to eat the food.

    C. He wants to eat the good food.    

    D. The host (主人) asks him to do so.

5. What does Mr King understand from that?

    A. The good food is for his good clothes.  

    B. The good food is for him.

    C. The good food is for his old clothes.  

    D. The people there are very polite.

单项选择题