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问题 单项选择题

哪位科学家提出了耗散结构理论（）

A、牛顿

B、普利高津

C、克劳修斯

D、爱因斯坦

答案

参考答案：B

填空题
已知函数f（x）=
-mx2+6mx+m+8
的定义域为R，则实数m值______．
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改错题
下列各句均有一处错误，请找出并改正。
( )1. The boy is good at play football.      
                         A         B    C     D                    
( )2. He often plays a piano                
                    A    B     C  D                          
( )3. He is born in Beijing                  
                 A  B  C  D                          
( )4. When did he start sing?                
                A   B         C    D                      
( )5. He became a player at the age eighteen.
                       A    B   C         D                        		_______
      
_______
      
_______
      
_______
      
_______
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