正确答案: A
            1:4 ( 
            题目:已知ABC∽DEF,且AB:DE=1:2,则ABC的面积与DEF的面积之比为
             解析:B
 
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            学习资料的答案和解析:
                                                    
                                 
                
                 [单选题]( )A number of new houses __________in Wenchuan last year.
                                                
                  
                                                                                                                                                                 were built 
                                                                                        
                
                
                            
                
                 [单选题]23.Kang Kang is my ________ .
                                                
                  
                                                                                                                     friend 
                                                                                                                                    
                
                解析:23.B【解析】从文中第七、八句可知 
                            
                
                 [单选题]20.
                                                
                  
                                                                         on 
                                                                                                                                                                                
                
                解析:20.A[解析】on his bike意为“骑(他的)自行车”。 
                            
                
                 [单选题]8. People like to see films on ______ TV instead of going to _______cinema.
                                                
                  
                                                                                                                     /;the 
                                                                                                                                    
                
                解析:8.B 【解析】考查冠词。on TV在电视上,为常见词组,不用冠词。go to the cinema去看电影,也是常见词组。