问题 选择题

生物大分子在生物体的生命活动中具有重要的作用。碳原子本身的化学性质,使它能够通过化学键连接成链或环,从而形成各种生物大分子。可以说,地球上的生命是在碳元素的基础上建立起来的。以上事实可以说明[ ]

A.C元素组成各种各样的化合物

B.C元素是最基本的元素

C.C元素是各种大分子中含量最多的元素

D.C元素比其他元素重要

答案

答案:B

填空题
阅读理解

阅读理解。

     Let's play a guessing game. He's a young man.  He is an actor and he is very popular. He is from

Liaoning province. He has short black hair and small eyes. He is of medium build. He can sing many

songs well and his voice is beautiful. He can dance well, too. He always has new looks. And people like

his new looks. He is in the Tongzhuodeni in 2011 Spring Festival Gala (2011春节联欢晚会).  He is

one of the disciples(徒弟) of Zhao Benshan. Do you know who he is?

1. The man is ______.    

          A                   B                     C                          D

2. What does he look like?        

A. He has short black hair and small eyes and he is of medium build.       

B. He has long black hair and small eyes and he is of medium build.       

C. He has short black hair and big eyes and he is of medium build.       

D. He has short black hair and small eyes and he is tall.

3. Can he sing well?       

A. Yes, he can.        

B. He can sing many songs well.        

C. No, he can't.        

D. We don't know.

4. Do people like his new looks?        

A. No, they don't.        

B. People don't like his new looks.        

C. Yes, they do.        

D. People don't like his old looks.

5. He is one of Zhao Benshan's ______.       

A. brothers                  

B. friends      

C. sons                    

D. disciples