去西昌游览,要想知道这个城市更多的情况,宜选择小比例尺地图。(     )    
                        
                     
                                
                                           
                        
                        
                            Although many Chinese students say their knowledge of English grammar is good, most would admit that their spoken English is poor. Whenever I speak to Chinese students they always say, “My spoken En    
                        
                     
                                
                                           
                        
                        
                            下图所示,1、2为物镜长度;3、4为目镜长度;5、6为观察时物镜与标本之间的距离大小。欲获得最大放大倍数的观察效果,其正确的组合是  A.1、3、5      
                        
                     
                                
                                           
                        
                        
                            Mr John is famous______a football  player.         A.by   B.for   C.as    
                        
                     
                                
                                           
                        
                        
                                   If  you’re planning on traveling, there are a few simple rules about how to make  life easier both before and after your journey.        First  of all, always check and double-che    
                        
                     
                                
                                           
                        
                        
                            “海宝”是2010年世博会的吉祥物,其形象如图所示.在点缀上海街头的各种“海宝”中,有一座“海宝”(材质均匀、实心)的质量为4.5×103千克,体    
                        
                     
                                
                                           
                        
                        
                            补写出下列名篇名句中的空缺部分。(6分) (1)      ,则其负太舟也无力。   (庄子《逍遥游》) (2)      ,材木不可胜用也。    (孟    
                        
                     
                                
                                           
                        
                        
                            下列命题是全称命题的为(  )A.存在x∈R,使x2-x+1<0B.所有2的倍数都是偶数C.有一个实数x,使|x|≤0D.有的三角形是等边三角形