100件产品中,含有合格品95件,次品5件,某人从中任意抽取一件产品,则正好抽到次品的概率是      
                        
                     
                                
                                           
                        
                        
                            (2011年湖南怀化,9题)下列灭火方法中,不正确的是A、油锅着火用锅盖该灭  B、木材着火用水浇灭C、电器着火用水扑灭  D、实验桌上洒出的酒精着    
                        
                     
                                
                                           
                        
                        
                            二、阅读理解        阅读下列短文,从每题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。      Not many years ago, a wealthy and rather    
                        
                     
                                
                                           
                        
                        
                             ---I’m  sorry to keep you waiting. I’ll make short work of this.  --- _________. I’m not in a hurry. A. Take it easy           B. Take your time          C.  Not at all.      
                        
                     
                                
                                           
                        
                        
                            ---Where did you come across your old classmate  Jane?    ---It was in the supermarket  _________ she worked _________ I came across her. A.where; when             B.that;  when      
                        
                     
                                
                                           
                        
                        
                            下列词语中加点的字,读音全都正确的一组是  (   ) A.旖旎(yǐ nǐ)  潜水艇(qiǎn) 烜赫一时(xuān) 靡不有初,鲜克有终(mǐ) B.框架(kuàng)    
                        
                     
                                
                                           
                        
                        
                            函数y=ax+1在[1,2]上的最大值与最小值之差为2,则实数a的值是() (A)2              (B)-2   (C)2或-2        (D)0