答案 
1　 C                    26　 B            51　 B            76　 ABD    
2　 A                    27　 D            52　 C            77　 AB    
3　 D                    28　 B            53　 A            78　 AD    
4　 C                    29　 B            54　 C            79　 BD    
5　 D                    30　 B            55　 B            80　 ABD    
6　 A                    31　 D            56　 C            81　 D    
7　 C                    32　 B            57　 D            82　 AC    
8　 D                    33　 A            58　 D            83　 B    
9　 D                    34　 D            59　 C            84　 BC    
10　 B                    35　 B            60　 C            85　 ABC    
11　 A                    36　 C            61　 AB            86　 B    
12　 B                    37　 C            62　 ABC            87　 C